A chemical reaction A + 2 B ⟶ A B 2 follows in two steps as- A + B ⟶ A B (slow) A B + B ⟶ A B 2 (fast) if rate = k [ A ] [ B ] , Then the order of the reaction is...

Question

A chemical reaction A + 2 B ⟶ A B 2 ​ follows in two steps as- A + B ⟶ A B (slow) A B + B ⟶ A B 2 ​ (fast) if rate = k [ A ] [ B ] , Then the order of the reaction is...

TestHub · Accepted Answer

The rate of a complex reaction is determined by the slowest step, which is known as the rate-determining step.

From the given mechanism, the slow step is $A + B ⟶ A B$ .

The rate law for the reaction is given as Rate $= k [A] [B]$ .

The overall order of the reaction is the sum of the exponents of the concentration terms in the rate law equation.

Order $= 1 + 1 = 2$ .

Answer: $2$

Chemistry - Chemical Kinetics Question with Solution | TestHub

Options:

Doubts & Discussion