The reaction 2A + B → C + D follows the rate law: rate = k[A]²[B]. What is the overall order of the reaction?
Correct: C
The overall order of a reaction is the sum of the exponents in the rate law. In this case, the exponent of [A] is 2, and the exponent of [B] is 1. Therefore, the overall order is 2 + 1 = 3, which is third order.