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CHM 101 CHM 101 Past Questions Objective Question

Question

The reaction A + 2B → products was found to follow the rate law: rate = k[A][B]. Predict by what factor the rate of reaction will increase when the concentration of A is doubled, the concentration of B is tripled, and the temperature remains constant.
Options
A 18
B 6
Correct Answer
C 5
D 12
Correct Answer

Option B is the correct answer.

Detailed Explanation

Initial rate = k[A][B]. New rate = k[2A][3B] = k × 2 × 3 × [A][B] = 6 × k[A][B]. Factor = 6.

Hint

Factor for A is 2, for B is 3; overall factor = 2 × 3 = 6.

Question Info