[Olympiad] For a reaction 2A + B → Products, doubling [A] quadruples the rate, and doubling [B] doubles the rate. What is the overall order of the reaction?
2
3
4
1
📝 Detailed explanation
Rate = k[A]²[B]¹. The order with respect to A is 2, and with respect to B is 1. Overall order = 2 + 1 = 3.
