Multiple choice

A + 2B → AB2 occurs by following mechanism:Step 1A+B→ AB[slowStep] 2AB+B → AB2[fast] ,Over all A+2B → AB2 The rate law

  1. k[A]

  2. k[B]

  3. k[A][B]

  4. k[A][B]2
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The rate law is determined by the slow step of the mechanism. Since the slow step is A + B to AB, the rate depends on the concentrations of A and B, resulting in rate = k[A][B].

Keep practicing — related questions