If the activation energy for self-diffusion in copper is 2.04 eV/atom and the activation energy for the migration of a vacancy is 1.08 eV, determine the ratio of the concentration of vacancies present in equilibrium at 1000 °C to the concentration present in equilibrium at 500 °C.

Q: Given the following information, calculate the equilibrium constant (K) of the reaction at 298 K. (R…

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Q: The interhalogen ClF₃ is prepared in a two-step fluorinationof chlorine gas:Cl₂(g)+F₂(g)⇌ ClF(g)…

A: Interhalogen compounds are the compounds formed by the combination of two or more halogen atoms.…

Q: Calculate the equilibrium partial pressure of nitrogen in an inert gas over liquid lithium at 527oC…

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Q: Define the interatomic equilibrium distance and briefly state the factors affecting the magnitude of…

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Q: why does the decomposition of calcium carbonate to calcium oxide and carbon dioxide occur in a…

A: The decomposition reaction is mostly activated by thermal energy. Decomposition of Calcium carbonate…

Q: 3. The number of vacancies Nin a crystal can be calculated using the Arrhenius equation: Ev /kT Ny=…

A: Usually units are placed in SI system but when you have to evaluate the answer in a particular unit…

Q: Arrange the gases CO, N2 and CH4 in increasing order of adsorption on the surface of charcoal in a…

A: Adsorption is a surface phenomenon in which a solid substance holds other substance that can be…

Q: For an electron donor/acceptor pair at 298 K, ket = 2.02 × 105 s−1 and ΔrG⦵ = −0.665 eV. The…

A: Gibbs energy- The Gibbs energy (symbol ) is also the thermodynamic potential that is minimized when…

Q: What are all the possible ways activated carbon can be modified in its adsorption capacity?

A: The adsorption efficiency depends on the nature of activated carbon used, the water composition,…

Q: Consider the following generic system at equilibrium:  2M (g) + N (g)   O (g) + P (g)…

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Q: In a step growth polymerization, there are 1.34 mol A-A type monomer, 1.33 mol B-B type monomer, and…

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Q: What is the main differences between Langmuir's isotherm and Freundlich isotherm?

A: In this question we will discuss about main difference between both type of adsorption Isothermal.…

Q: Given the BET isotherm plot is y = 123.961 x — 1.181. The surface area of the activated carbon was…

A: BET equation can be given as follows: z(1-z)1V=(c-1)zcVmono+1cVmono where z: P/Po P: Pressure of gas…

Q: The reduction of stannous sulphide by hydrogen takes place as follows: SnS(s) + H2(g) 2 Sn(1) +…

A: The relationship between equilibrium constant and temperature under two different conditions is…

Q: A surface has 8 equivalent adsorption sites for two bound He atoms. How many different…

A: Given: Total equivalent adsorption sites=8 He atoms present=2 To find: Number of configurations

Q: Analyze the following reaction mechanism: 1. Н.О, — Н,О +0 2. O+ CF,CI, –→ CIO + CF,CI 3. CIO + O, 2…

A: The steps involved in the given mechanism are, 1. H2O2 → H2O + O 2. O + CF2Cl2 → ClO + CF2Cl 3. ClO…

Q: An adsorption is: Select one: a. not spontaneous process b. endothermic process O c. dynamic process…

A: Given,  An adsorption is ?  Options are : a). not spontaneous process  b). endothermic process  c).…

Q: Calculate the collision frequency, z, and the collision density, ZAA, in ammonia, d = 380 pm, at 30…

A: Collision frequency is the average rate in which two reactant collide and it determines the average…

Q: mm into t

A: Given data: Initial concentration of nitrogen = 0.066 % Concentration of nitrogen in the atmosphere…

Q: As discussed by Adeleye et al. (2015), what are the rationale for the following tablet…

A: When there is increase in compression force  disintegration time will increase or decrease depending…

Q: Use the following data to determine the value of k at 350 K.  Time (s) [ClO] (molecules/cm3)…

A: Information required to plot the graph:

Q: Explain the relationship given by Freundlich in adsorption isotherm.

A: An empirical relationship between the amount of gas adsorbed into a solid surface and the pressure…

Q: An adsorbent surface has N no.of adsorption sites out of which 'n' fraction of sites are occupied .…

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Q: The research group has recently focused on identifying the chemical properties of fluorocarbons,…

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Q: The diffusion coefficients for iron in nickel are given at two temperatures: T (K) D (m'ls) 1273 9.4…

A: The data given is,

Q: The decomposition of dinitrogen pentoxide gas at 318.15K is measured as the decrease of N2O5…

A: We have find the rate constant for given data of decomposition of N2O5

Q: What is the work associated with the decomposition of liquid peroxide forming gaseous oxygen and…

A: Given that : We have to calculate the work associated with the decomposition of liquid peroxide…

Q: Explain the effect of temperature on the extent of physical and chemicaladsorption.

A: Adsorption is surface phenomenon. It is concentration of molecules of liquid (or) gas over the solid…

Q: state 2 advantages of transitional theory over collision theory

A: Rate of a reaction can be expressed by the two theories namely collision theory and transition state…

Q: If the adsorption of a gas onto a surface is found, somewhat unusually, to be endothermic, what can…

A: Adsorption is the adhesion of ions, atoms, or molecules from a dissolved solid, liquid, or gas to a…

Q: Calculate the collision frequency, z, and the collision density, ZAA, in carbon monoxide, d = 360…

A: Given :- For carbon monoxide               d = 360 pm              P = 120 KPa             T =…

Q: Why can a molecule such as CO easily be dissociated on a metal (Au/CeO2) surface but not in the gas…

A: Adsorption (chemisorption) on a metal surface

Q: Rate Constant Temperature 3.12 x 103 M-1s-1 275 K 2.70 x 104 M-1s-1 300 K

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Q: How can the number of effective collisions be increased?

A: Effective collisions are those that result in product formation due to an increase…

Q: Use the themodynamic data to estimate the boiling point of bromine, Brz.

A: The values of  standard enthalpy change (∆H°) and standard entropy change (∆S°) for Br2(g) are 30.91…

Q: The viscosity of mercury at 20 °C is 1.554 cP and 1.450 cP at 40 °C. What is the energy of…

A: Given that Viscosity = 1.554 cP at temperature of 20oC (or 393.25K)  Viscosity = 1.450 cP at…

Q: Determine the activation energy for the redox reaction Q2* + 2 Rat→ Q** + 2 R2*. Rate Constant…

A: The rate constant of a reaction depends on the temperature of the reaction. The minimum amount of…

Q: Why is the adsorption of a gas onto a surface almost always an exothermic process?

A: The process of the attachment of particles over the surface of another material is called…

Q: Why is adsorption phenomenon always exothermic?

A: Exothermic process are those where heat is released by the system.

Q: A chlorine (CI) and bromine (Br) atom are adsorbed on a small patch of surface (see sketch at…

A: Given, number of adsorption sites = 36

Q: Define the ionic strength dependence for the rate coefficient of ionic reactions.

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Q: Draw a Langmuir isotherm and properly label the axes! Write down the equation defining the isotherm…

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Q: Assume that you have a solution of blue Cu2+ bound by water. You want to determine both the rate at…

A: Introduction: Equilibrium constant:          When the reaction is in equilibrium, the equilibrium…