Problem 10 - Olympiad

What is the rate law for a reaction that is first order with respect to [A] and second order with respect to [B]?

A. rate = k[A][B]B. rate = k[A][B]^2C. rate = k[A]^2[B]D. rate = k[A][B]^2 + k[B]^2[A]

Correct: B

The rate law for a reaction that is first order with respect to [A] and second order with respect to [B] can be written as rate = k[A][B]^2. This is because the reaction rate is directly proportional to the concentration of [A] and the square of the concentration of [B].