Question Detail
Question
For the reaction A + B → C, the rate law is rate = k[A][B]. If [A] is tripled and [B] is halved, the rate changes by a factor of:
Correct Answer
Option B is the correct answer.
Detailed Explanation
Initial rate = k[A][B]. New rate = k[3A][½B] = k × 3 × ½ × [A][B] = 1.5 × k[A][B]. Factor = 1.5.
Hint
Factor for A is 3, for B is 0.5; overall = 3 × 0.5 = 1.5.