engineering chemistry MCQ #4900

For a reaction with rate law rate = k[A][B]², if [A] is doubled and [B] is tripled, the rate increases by a factor of

engineering chemistry MCQ #4900

Question 1
Q1. For a reaction with rate law rate = k[A][B]², if [A] is doubled and [B] is tripled, the rate increases by a factor of
- A) 6
- B) 12
- C) 18
- D) 24
Answer: 18
Explanation: New rate = k(2[A])(3[B])² = k(2[A])(9[B]²) = 18k[A][B]², so rate increases by 18 times.