Chemical Kinetics and Nuclear ChemistryMedium

Question

First order gas phase reaction

A → B + C

pᵢ = initial pressure of gas A, pₜ = total pressure of the reaction mixture at time t

Expression of rate constant (k) is

Options

A.1/t ln[pᵢ/(2pᵢ − pₜ)]
B.1/t ln[2pᵢ/(pᵢ − pₜ)]
C.1/t ln[pᵢ/(3pᵢ − 2pₜ)]
D.1/t ln[3pᵢ/(4pᵢ − pₜ)]

Solution

Sol.

As given (Pᵢ − x) + x + x = Pₜ

x = (Pₜ − Pᵢ)

K = 1/t ℓn[Pᵢ/(Pᵢ − x)] = 1/t ℓn[Pᵢ/{Pᵢ − (Pₜ − Pᵢ)}]

K = 1/t ℓn[Pᵢ/(2Pᵢ − Pₜ)]

Create a free account to view solution

View Solution Free
Topic: Chemical Kinetics and Nuclear Chemistry·Practice all Chemical Kinetics and Nuclear Chemistry questions

More Chemical Kinetics and Nuclear Chemistry Questions

Half life is independent of the concentration of A. After 10 min volume of N2 gas is 10 L and after complete reaction is...When secondary alkyl halide undergoes SN reaction, it follows SN1 (first-order) and SN2 (second-order) pathway simultane...Saponification of ethyl acetate (CH3COOC2H5) by NaOH (Saponification of ethyl acetate by NaOH is second order Rxn) is st...A first order reaction has a specific reaction rate of 10-2 sec–-1. How much time will it take for 20g of the reactant ...For the reversible reaction A$\rightleftharpoons$B, the time at which the rate of change in concentration of ‘A’ is equa...