Using the method of initial rates for the reaction a → b, if the initial concentration of a is doubled and the rate of reaction quadruples, what is the order of reaction with respect to a?

Question

Eileen Bernard

Chemistry

17 May, 21:01

Using the method of initial rates for the reaction a → b, if the initial concentration of a is doubled and the rate of reaction quadruples, what is the order of reaction with respect to a?

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Julio Marquez · Answer 1

Answer is: reaction is second order with respect to a.

This second order reaction is proportional to the square of the concentration of reactant a.

rate of reaction = k[a]².

k is second order rate constant and have unit M⁻¹·s⁻¹.

Integrated rate law for this reaction: 1/[a] = 1 / [a] ₀ + kt.

t is time in seconds ...