Question Detail
Question
The reaction A + 2B → products were found to have the rate law, rate = k[A][B]². Predict by what factor the rate of reaction will increase when the concentration of A is doubled and the concentration of B is also doubled.
Correct Answer
Option D is the correct answer.
Detailed Explanation
Initial rate = k[A][B]². New rate = k[2A][2B]² = k × 2 × 4 × [A][B]² = 8 × k[A][B]². The rate increases by a factor of 8.
Hint
Apply the change to each concentration in the rate law: factor for A is 2, for B² is 2² = 4.