Question

Integrated rate equation for zero order reaction

Answer 1

In some reactions, the rate is apparently independent of the reactant concentration. The rates of these zero-order reactions do not vary with increasing nor decreasing reactants concentrations. This means that therate of the reaction is equal to the rateconstant, k, of thatreaction

Answer 2

Hey !!

Consider the general reaction : A ---> Products

If it is a reaction of zero order, Rate = -d [A ] / dt = k [A]° = k

(OR) d[A] = -k dt

Integrating both sides, we get [ A ] = kt + I -------> (1)

where I  is a constant of integration  At t = 0 ,  [A] = [A]₀            ∴ [A]= I

Substituting these values of I in eqn. (1), we get [A] = -kt + [A]₀ -----> (2)

(OR)           kt = [A]₀ - [A] (or) k = 1 / t {[A]₀ - [A]} -----> (3)

This is the expression for rate constant for reaction of zero order.

HOPE IT HELPS YOU !!