Answer:
43.76 g = 0.04376 Kg
Explanation:
The equation of the reaction is given as;
H2 + Cl2 --> 2HCl
From the equation;
1 mol of Cl2 produces 2 mol of HCl
Converting to mass;
Mass = Number of mol * Molar mass
Cl2;
Mass = 1 mol * 70.906 g/mol = 70.906 g
HCl;
Mass = 2 mol * 36.458 g/mol = 72.916 g
This means;
70.906 g of Cl2 produces 72.916 g of HCl
x g of Cl2 would produce 45g of HCl
70.906 = 72.916
x = 45
x = 45 * 70.906 / 72.916
x = 43.76g
Which energy profile best shows that the formation of NO2 requires 33.1
kJ/mol?
The energy profile representing the reaction of the formation of NO2 is energy profile B; option D.
What is an energy profile diagram?An energy profile diagram is a diagram which illustrates in the form of a graph the energy changes that occur as reactant molecules react to form products.
An energy profile has energy of the molecules plotted on the y-axis and the reaction pathway or the reaction progress on the x-axis.
The shape of an energy profile depends on whether the reaction is an endothermic or exothermic reaction.
An exothermic reaction will have the energy of reactants higher than that of products, whereas an endothermic reaction will have the energy of products higher than the reactants.
The formation of NO2 is an endothermic reaction which requires 33.1kJ/mol of energy to complete.
Therefore, the energy profile representing the reaction is energy profile B.
In conclusion, an energy profile diagram shows energy changes that occur in a reaction graphically.
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Multiple Choice Question As a reaction proceeds, the value of Q _____. Multiple choice question. decreases steadily until it reaches the value of K increases steadily until it reaches the value of K increases or decreases, as necessary, until it reaches the value of K
As a reaction proceeds, the value of Q decreases steadily until it reaches.
What is Equilibrium Constant ?The equilibrium constant of a chemical reaction usually denoted by the symbol K that express the relationship between the amount of reactants and products when a chemical reaction reaches equilibrium.
It is expressed as:
[tex]K_{C} = \frac{[C]^{c} \times [D]^{d} \times ...}{[A]^{a} \times [B]^{b} \times ...}[/tex]
where,
K = Equilibrium constant
A, B = Products
C, D = Reactants
[A] = equilibrium concentration of A in moles
a = number of moles of A
What is Reaction Quotient ?The measurement of relative amount of reactants and products which are present in a reaction at a particular point in time.
Q < K
Q ∝ [tex]\frac{\text{Products}}{\text{Reactants}}[/tex]
Thus from the above conclusion we can say that As a reaction proceeds, the value of Q decreases steadily until it reaches.
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Structure and applications of poly(vinyl alcohol) hydrogels produced by conventional crosslinking or by freezing/thawing methods
Answer: Structure and applications of poly(vinyl alcohol) hydrogels produced by repeated cycles of freezing and thawing.
Explanation:
Poly(vinyl alcohol) (PVA) is a polymer of great interest because of its many desirable characteristics specifically for various pharmaceutical and biomedical applications. The crystalline nature of PVA has been of specific interest particularly for physically cross-linked hydrogels prepared by repeated cycles of freezing and thawing. This review includes details on the structure and properties of PVA, the synthesis of its hydrogels, the crystallization of PVA, as well as its applications. An analysis of previous work in the development of freezing and thawing processes is presented focusing on the implications of such materials for a variety of applications. PVA blends that have been developed with enhanced properties for specific applications will also be discussed briefly. Finally, the future directions involving the further development of freeze/thawed PVA hydrogels are addressed.
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Minerals are all naturally occurring solid substances with a definable chemical composition. they also must possess _____________.
They must also possess a fixed crystalline structure (spatial arrangement of atoms and ions).
What are the properties of minerals?Color is one category, however it is not necessarily a reliable indicator of a mineral's identity. Numerous minerals can be found in a variety of colors, and many minerals contain additional compounds that give them a surprising color.The way a mineral reflects light is called luster. The characteristics of minerals include metallic, pearly, glassy, smooth, greasy, dazzling, or drab.When particular minerals cleave, they do so in a distinct manner.By observing how simple it is to scrape a mineral, hardness is determined.The chemical composition of each occurrence of a mineral varies within a narrow range, and the atoms that make up the mineral must exist in particular ratios.In a mineral, the atoms are arranged in a recurring, predictable pattern.
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Which sample contains the greatest number of atoms?
(a) 27.2 g cr
(b) 55.1 g ti
(c) 205 g pb
Answer:
b option is correct
Explanation:
A nuclear reaction can be controlled using which of the following?
Select one or more:
a. control rods
b.water to disperse the heat
c.large containers
d. small containers
Control rods is regarded as a substance which can control nuclear reaction and is denoted as option A.
What is Nuclear reaction?This is a type of reaction which involves the nuclei of an atom being split or joined together and is usually accompanied with a great amount of energy emitted in the form of heat.
The two types of nuclear reaction include:
Nuclear fusionNuclear fissionNuclear fusion involves the collision of two or more nuclei in other form a new atom while nuclear fission involves splitting the atoms to form other products and involves a very high amount of energy and exposure to organisms should be prevented as the radiations can alter DNA.
Control rods are commonly used in nuclear reactors and control the rate of fission in the fuel used. This is therefore the reason why it was chosen as the most appropriate choice.
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Which of the following is true about a redox reaction?
In a redox reaction, the reducing agent loses electrons..
In a redox reaction, the oxidizing agent loses electrons.
In a redox reaction, the oxidized species gains electrons.
In a redox reaction, the reduced species loses electrons
AnswerThe correct (A).
Explanation:
The true statement about the redox reaction is In a redox reaction, an electron is lost by the oxidizing agent.
Answer:A
Explanation:i took the test
The gas arsine, AsH3, decomposes as follows: In an experiment at a certain temperature, pure AsH3(g) was placed in an empty, rigid, sealed flask at a pressure of 392.0 torr. After 48 hours the pressure in the flask was observed to be constant at 488.0 torr. a. Calculate the equilibrium pressure of H2(g). b. Calculate Kp for this reaction
The equilibrium pressure of [tex]H_{2}[/tex] is 288 torr. and [tex]K_{p}[/tex] for this reaction is 0.786 atm.
from the reaction:- [tex]2AsH_{3}[/tex] ⇄ [tex]2As + 3H_{2}[/tex]
initial concentration 392 torr. 0
at equilibrium. 392 - [tex]2x[/tex]. [tex]3x[/tex]
and the final pressure in the flask = 488 torr.
Hence,
[tex]( 392 - 2x ) + 3x = 488\\ x = 488-392\\x = 96 torr.[/tex]
The partial pressure of [tex]H_{2}[/tex] is 3 × 96 = 288 torr.
and [tex]AsH_{3}[/tex] is 392 - ( 2 × 96 ) = 392 - 192 = 200 torr.
Now, to find [tex]K_{p}[/tex] for this reaction, we will use [tex]K_{p} = \frac{(P_{H_{2} })^{2} }{( P_{AsH_{3} } )^{2}}[/tex]
putting all the values, we get,
[tex]K_{p} = \frac{(288)^{3} }{(200)^{2} }[/tex]
= 597.1968 torr.
= 0.786 atm. ( 1 atm = 760 torr. )
what do you mean by equilibrium?
Equilibrium in chemistry is the phase that exists when a chemical reaction and its opposite reaction happen at the same rates. This word's Latin origin dates back to the prefix aequi-, which means equal, and lbra, that indicates scale or balance.
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What is the osmotic pressure of a solution made from 12.5 g of CaCl2 in enough water to make 500 mL, if CaCl2 is 78.5% dissociated at 30oC
The osmotic pressure of a solution made from 12.5 g of CaCl2 in enough water to make 500 mL, if CaCl2 is 78.5% dissociated at 30oC is 167.087 atm
Define osmotic pressure:-Osmotic pressure and osmosis are connected. Osmosis is the passage of a solvent through a semipermeable membrane into a solution. The pressure that halts the osmosis process is known as osmotic pressure. Osmotic pressure is a collective attribute of material because its value is determined by the solute's concentration rather than its chemical composition.
The formula used to calculate Osmotic Pressure is:-
π = M x R x T x i
Where;
π =osmotic pressure (in atm)
M=molar concentration (in mol/L)
=(given mass/molar mass)/volume=(12.5g /111.0)/(500/1000)
=0.224 mol/L
R=Universal gas constant (0.08206 L.atm/mol.K)
T=absolute temperature (in K) = 30.C + 273 = 303 K
i= van't Hoff factor of solute =3
using the formula and substituting values;
π=0.224 x 0.08206 x 303 x 3
= 167.087 atm
The osmotic pressure is 167.087 atm
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Hydrogen gas and oxygen gas react to produce water. Both of these gases are present in
the air around us -so, how come water isn't being produced all around u?
Water isn't being produced all around us because the hydrogen and oxygen are present in stable form.
How come water isn't being produced all around us?Water molecule is produced when the unstable hydrogen reacts with unstable oxygen because they are very reactive. Due to their reactive nature, hydrogen and oxygen react with each other forming water molecule. So that's why we can say that water is not being produced around us due to stable form of hydrogen and oxygen.
So we can conclude that Water isn't being produced all around us because the hydrogen and oxygen are present in stable form.
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Which component of delegation is the ability to perform duties in a specific role?
The component of delegation which speaks to the ability to perform a specific task is: Authority.
What is delegated Authority?The division of work and assignment of decision-making authority to a person who answers to a leader or management is referred to as delegation of authority.
It is an organizational technique in which a management assigns each employee a portion of their own workload.
What is the difference between delegated authority and responsibility?While the superior may transfer power to followers, responsibility is taken, or it is built into the duty that was given to the subordinate.
While responsibility calls for the capacity for compliance or obedience, the capacity to obey directions, authority requires the capacity to issue orders and instructions hence - responsibility.
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chegg You add a sprinkle of sugar (non-volatile solute) to a beaker of water; the vapor pressure of the solution, compared to the vapor pressure of the pure solvent before the sugar was added, will:
If a non-volatile sugar is added to water , the vapor pressure of liquid will tend to decreases and this reduction of vapor pressure is said to be proportional to the numbers of mole fraction of solute that was added to it.
What occurs when a non volatile solute is added to a solution?In the case above, the vapor pressure of the solution is known to be lowered if compared to the vapor pressure of the pure solution.
Therefore if a non-volatile solute is said to be place or added to a pure solution such as water, the vapor pressure of the solution will be reduced than that of the pure solution.
Hence, the statement that If a non-volatile sugar is added to water , the vapor pressure of liquid will tend to decreases and this reduction of vapor pressure is said to be proportional to the numbers of mole fraction of solute that was added to it is correct.
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According to the quantum mechanical model, where are electrons located?
Select one:
A. in orbits around the nucleus
B inside the nucleus
C. at great distances from the nucleus
D. in the cloud-like areas around the nucleus
Answer:
D.) in the cloud-like areas around the nucleus
Explanation:
A.) is incorrect. Electrons exist in orbitals in the Bohr's Model.
B.) is incorrect. Electrons do not exist in the nucleus. They always exist outside of the nucleus, but their exact position has been debated.
C.) is incorrect. While the electron clouds in the quantum mechanical model can cover a relatively large amount of space, the distance from the nucleus is not great. Within this cloud, electrons can exist closer to the nucleus at a particular time.
D.) is correct. Electrons are said to exist somewhere within these clouds around the nucleus. The model uses the cloud references to display how you can never be sure where the electrons are located - they are always moving around.
Read the chemical equation.
n2 + 3h2
2nh3
using the volume ratio, determine how many liters of nh3 is produced if 3.6 liters of
h2 reacts with an excess of n2, if all measurements are taken at the same
temperature and pressure? (5 points)
1) 5.4 liters
2) 2.4 liters
3) 1.8 liters
4) 1.2 liters
The volume of [tex]NH_3[/tex] that will be produced is 2.4 liters. The correct option is 2.
Volume ratioThe equation of the reaction goes thus: [tex]N_2 + 3H_2 --- > 2NH_3[/tex]
The ratio of H2 to NH3 is 3:2.
Thus, with 3.6 L of H2, the volume of NH3 that will be produced is:
2/3 x 3.6 = 2.4 liters.
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Determine the grams of sodium chloride produced when 10.0 g of sodium react with 10 g of chlorine gas according to the equation
2na + cl2 = 2nacl
When 10.0 g of sodium react with 10 g of chlorine gas according to the equation, the mass of sodium chloride produced is 25.4 g.
Mass of sodium chloride producedThe mass of sodium chloride produced in the given reaction is calculated as follows;
2Na + Cl2 = 2Nacl
In the reaction above;
2(23 gram of sodium) -------------------- 2(58.44 g of sodium chloride)
10 g of sodium -------------------------- ? mass of sodium chloride
46 g of Na ----------------------------116.88 g of NaCl
10 g of Na ---------------------------- ? NaCl
= (10 x 116.88)/46
= 25.4 g
Thus, when 10.0 g of sodium react with 10 g of chlorine gas according to the equation, the mass of sodium chloride produced is 25.4 g.
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If the concentration of the acid is represented by the variable x, then what should you use to represent the concentration of the base so you can solve for the concentrations needed to make a 0.10 M buffer
Concentration of base in terms of x is 0.1 - x.
What is Concentration?The amount of solute that has dissolved in a specific amount of solvent or solution is measured as solution concentration. A concentrated solution is one that has a significant amount of dissolved solute in it. A diluted solution is one that has a little amount of dissolved solute in it.
A 0.10M buffer solution mean the sum of concentration of acid and base in the buffer is 0.1M
if A is acid nd B is its conjugate base
[A] + [B] = 0.1
[B] = 0.1 - [A]
if [A] or acid concentration is x, [B] or base concentration is
[B] = 0.1 - x
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The Neutral Gator program used methods that _____. The Neutral Gator program used methods that _____. reduced the amount of carbon dioxide already in the atmosphere decreased production of carbon dioxide increased production of carbon dioxide decreased production of carbon dioxide and reduced the amount of carbon dioxide already in the atmosphere
The Neutral Gator program used methods that reduced the amount of carbon dioxide already in the atmosphere and also helps in decreased production of carbon dioxide.
The rate of CO2 increase is in the last few hundred years is 10 times more with the rate of increase (or decrease, for that matter) in the preceding 400,000 years.
There are many possible reasons for this cause , some primary factors are listed below:
Increase in populationincreased emission of green house gases, as we all know auto mobile industry is growing rapidly and this vehicles releases harmful gases like CO2, CO ,etc. and increases carbon % , this CO2 is a main gas component in green house effect.Deforestation, as the amount of plant decreases the CO2 present in atmosphere increases, plants uses CO2 and sun lite to make their food via photosynthesis.Increased emission of Industrial flue gases, etc.Learn more about green house effect here...
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age
Which of the following has the greatest mass?
Select one:
1.0 mole of Zn
1.0 mole of Cu
1.0 mole of Fe
they all have the same mass
Answer:
Option (2)
Explanation:
Since the amount of each sample is the same, we are looking for the metal with the greatest density, which is copper.
How many Chlorine molecules are in 6.5 moles of chlorine?
Answer:
6.5 x ( 6.02x 10^23)= 3.913 x10^24
Explanation:
6.5 x ( 6.02x 10^23)= 3.913 x10^24
generalized approach for the synthesis of silica supported pd-zn, cu-zn andni-zn gamma brass phase nanoparticles
According to the available literature, standard nanoparticle (NP) production processes make it especially challenging to reach the catalytically important and highly complicated intermetallic -brass crystal structure.
We present a straightforward and logical method for obtaining this phase in M-Zn (M = Pd, Cu, Ni) systems as silica-supported single-phase nanocrystals. This hybrid technique begins with the synthesis of supported M/SiO2 using typical methods (dry impregnation and strong electrostatic adsorption), followed by several hours of heating to high temperatures in the presence of a stoichiometric quantity of metallic Zn in an evacuated closed system.
Catalytically important bimetallic systems:Pd-Zn is by far the most common in catalytic applications and produces the smallest particle size (8 nm). We investigated the effect of various synthesis parameters on phase purity and particle size distribution in the case of synthesized -brass Pd-Zn/SiO2 supported catalysts and provided general guidelines for synthesis optimization.
Pd/SiO2 is transformed to -brass Pd-Zn/SiO2, resulting in a precipitous drop in CO adsorption and a 25 kJ/mol increase in the ethylene hydrogenation barrier, indicating that the catalytic active sites are significantly modified as a result of alloying. We anticipate that these catalysts will find use in a variety of Pd-catalyzed chemistries.
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What conclusion can be made based on the temperatures of soil, sand, water, and air in Section 1 of the experiment? Did your results support your hypothesis? Why or why not?
i need something thats not a sample answer :)
earth science btw!
The experiment is not found here but temperatures of soil, sand, water, and air increase by raising the supply of kinetic energy.
What is kinetic energy?Kinetic energy refers to motion (movement energy), whereas potential energy refers to stored energy, which is able to perform work.
The increase in temperature causes a rise in kinetic energy due to a higher movement of subatomic particles that form the elements above described (e.g., soil).
In conclusion, the experiment is not found here but temperatures of soil, sand, water, and air increase by raising the supply of kinetic energy.
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Oxygen is a gas at 20 °C .
(i) Describe the arrangement and behavior of the particles in the gas.
Answer:
They are not arranged in a particular way.They have negligible intermolecular force of attraction and having more spaces between the particles.
This graph illustrates the course of a chemical reaction with and without an enzyme. While the products and reactants are the same, the presence of an enzyme changes the amount of energy required for the reaction to begi
Red curve shows the course of the reaction in the presence of an enzyme. Line a represents the activation energy for that reaction.
Hence, Option (iv) is correct answer.
What is Activation Energy ?Activation energy is the minimum energy required an input of energy to initiate the reaction.
[tex]k = Ae^{\frac{-E_a}{RT}}[/tex]
where,
k = rate constant
A = pre-exponential factor
Eₐ = activation energy
R = universal gas constant
T = absolute temperature (in K)
Activation energy = Threshold energy - Energy of colliding molecule.
Thus from the above conclusion we can say that Red curve shows the course of the reaction in the presence of an enzyme. Line a represents the activation energy for that reaction.
Hence, Option (iv) is correct answer.
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Disclaimer: The question was given incomplete on the portal. Here is the complete question.
Question: This graph illustrates the course of a chemical reaction with and without an enzyme. While the products and reactants are the same, the presence of an enzyme changes the amount of energy required for the reaction to begin.
Part A - Interpreting the graph
Which curve shows the course of the reaction in the presence of an enzyme--the black curve or the red curve? Which line represents the activation energy for that reaction--a, b, or c?
(i) a black curve; line a
(ii) black curve; line b
(iii) black curve; line c
(iv) red curve; line a
(v) red curve; line b
(vi) red curve; line c
How many moles of solute particles are present in 1 l (exact) of aqueous 0.057 m hno3?
The total number of moles of solute particles present in 1L (exact) of aqueous 0.057 m hno3 is 0.166 mol
Initial moles of HNO3 = 1Lx 0.083 mol HNO3/1 L
The HNO3 is a strong acid that can be completely dissociated in the following way.
HNO3→H + NO
1 mol 1 mol 1 mol
The HNO3 is dissociated into two particles (Kt and NO3). So that,
total moles particles = 0.083 mol (K) + 0.083 mol (NO) = 0.166 mol
The number of moles of solute = mass of solute ÷ molar mass of solute, where mass is measured in grams and molar mass (defined as the mass of one mole of a substance in grams) is measured in g/mol.
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Consider the balanced reaction
below:
P2O3 + 3H₂O → 2H3PO3
How many grams of diphosphorus
trioxide, P2O3, are required to produce 10.2 moles of phosphorous acid, H3PO3?
I really really need help and I’m struggling with chemistry rn
Answer:
561 g P₂O₃
Explanation:
To find the mass of P₂O₃, you need to (1) convert moles H₃PO₃ to moles P₂O₃ (via mole-to-mole ratio from equation coefficients) and then (2) convert moles P₂O₃ to grams P₂O₃ (via molar mass). It is important to arrange the ratios/conversions in a way that allows for the cancellation of units. The final answer should have 3 sig figs to match the amount of sig figs in the given value.
Atomic Mass (P): 30.974 g/mol
Atomic Mass (O): 15.998 g/mol
Molar Mass (P₂O₃): 2(30.974 g/mol) + 3(15.998 g/mol)
Molar Mass (P₂O₃): 109.942 g/mol
1 P₂O₃ + 3 H₂O -----> 2 H₃PO₃
10.2 moles H₃PO₃ 1 mole P₂O₃ 109.942 g
---------------------------- x -------------------------- x ------------------- = 561 g P₂O₃
2 moles H₃PO₃ 1 mole
Question 7
What causes metallic bonds to form?
O The attraction between the delocalized electrons and the metal's anions
O The attraction between the delocalized electrons and the metal's valence electrons
O The attraction between the delocalized electrons and the metal's atoms
O The attraction between the delocalized electrons and the metal's cations
< Previous
N
Answer:
D.) The attraction between the delocalized electrons and the metal's cations
Explanation:
Metallic bonds form between free-floating valence electrons (delocalized electrons) and positively charged metal ions (cations). The negative charge from the electrons and the positive charge from the ions are what form the attraction.
Sodium phosphate dissolves as follows: na3po4(s) → 3na (aq) po4-(aq). How many moles of na3po4 are required to make 1. 0 l of solution in which the na concentration is 0. 15 m?
The 0.05 moles of [tex]Na_{3}PO_{4}[/tex] required to make 1 L of solution in which the [tex]Na[/tex] concentration is 0. 15 M.
Calculation,
The Sodium phosphate dissolves as follows:
[tex]Na_{3}PO_{4}(s)[/tex] → [tex]3Na^{+} (aq)+PO_{4}^{-} (aq)[/tex]
To make 1. L of solution in which the [tex]Na^{+[/tex]concentration is 0. 15 M
The morality of [tex]Na^{+[/tex]= 0.15 M = number of moles / volume in lit
The morality of [tex]Na^{+[/tex]= 0.15 M = number of moles /1 Lit
number of moles of [tex]Na^{+[/tex] = 0.15 mole
The mole ratio is 1: 3
It means, the 1 mole of [tex]Na_{3}PO_{4}(s)[/tex] required to form 3 mole of [tex]Na^{+[/tex]
So, to form 0.15 mole of [tex]Na^{+[/tex] = 1×0.15 / 3 moles of [tex]Na_{3}PO_{4}(s)[/tex]required.
Hence, number of moles of [tex]Na_{3}PO_{4}(s)[/tex] required = 0.05 moles.
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If the reaction between H2 and I2 to form HI were at equilibrium and an additional 0.25 moles of H2 were added to the reaction, what would happen
The equilibrium would shift in the direction of the products
What is Equilibrium?Equilibrium in chemistry is the state that exists when a chemical reaction and its opposite reaction happen at the same rates. This word's Latin origins may be traced to the prefix aequi-, which means equal, and lbra, which means scale or balance.
[tex]{\displaystyle {\begin{aligned}{\text{forward reaction rate}}&=k_{+}{\ce {A}}^{\alpha }{\ce {B}}^{\beta }\\{\text{backward reaction rate}}&=k_{-}{\ce {S}}^{\sigma }{\ce {T}}^{\tau }\end{aligned}}}[/tex]
where A, B, S and T are active masses and k+ and k− are rate constants. Since at equilibrium forward and backward rates are equal:
[tex]{\displaystyle k_{+}\left\{{\ce {A}}\right\}^{\alpha }\left\{{\ce {B}}\right\}^{\beta }=k_{-}\left\{{\ce {S}}\right\}^{\sigma }\left\{{\ce {T}}\right\}^{\tau }}{\displaystyle k_{+}\left\{{\ce {A}}\right\}^{\alpha }\left\{{\ce {B}}\right\}^{\beta }=k_{-}\left\{{\ce {S}}\right\}^{\sigma }\left\{{\ce {T}}\right\}^{\tau }}[/tex]
and the ratio of the rate constants is also a constant, now known as an equilibrium constant.
[tex]{\displaystyle K_{c}={\frac {k_{+}}{k_{-}}}={\frac {\{{\ce {S}}\}^{\sigma }\{{\ce {T}}\}^{\tau }}{\{{\ce {A}}\}^{\alpha }\{{\ce {B}}\}^{\beta }}}}{\displaystyle K_{c}={\frac {k_{+}}{k_{-}}}={\frac {\{{\ce {S}}\}^{\sigma }\{{\ce {T}}\}^{\tau }}{\{{\ce {A}}\}^{\alpha }\{{\ce {B}}\}^{\beta }}}}\\[/tex]
H₂ + I₂→ 2HI
Rate constants - The proportionality constant in the equation that defines the link between the rate of a chemical reaction and the concentrations of the reacting chemicals is known as the rate constant, also known as the specific rate constant.
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An experiment was conducted to determine if the intermolecular forces in two liquids affects their boiling points. Each liquid was sprayed on a paper towel. Each paper towel was wiped across a glass table to moisten the surface. The table shows a partial record of the experiment.
Given the partial record of the experiment, the information that should be recorded in the last column of the table is B. Time is taken by the glass surface to dry.
What is an intermolecular force?These are forces of attraction between atoms, molecules, and ions when they are placed close to each other.
Intermolecular forces are electrostatic in nature, and this means that they arise from the interaction between positively and negatively charged species.
Hence, an intermolecular force acts between molecules and their examples are London dispersion forces, dipole-dipole interaction, ion-dipole interaction, and van der Waals forces.
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The complete question
An experiment was conducted to determine if the intermolecular forces in two liquids affect their boiling points. Each liquid was sprayed on a paper towel. Each paper towel was wiped across a glass table to moisten the surface. The table shows a partial record of the experiment.
Experimental Record
Liquid Intermolecular Forces ?
А relatively strong
B relatively weak
What information should be recorded in the last column of the table?
Time is taken by the liquids to start boiling
Time is taken by the glass surface to dry
The volume of liquid required to moisten the paper towels
Time taken by the paper towels to become completely moist
true or false, Valence bond theory states that a bond between two atoms is the strongest when the nuclei of the atoms are touching each other.
Valence bond theory stating that a bond between two atoms is the strongest when the nuclei of the atoms are touching each other is true.
What is Valence bond theory?This theory states that when two valence orbitals of two different atoms overlap on each other, the bond is usually strong.
The bond formed in this scenario is usually covalent which involves sharing of the valence electrons.
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