A complex reaction: 2X + Y -> Z, takes place in two steps: Step I: X + Y -(K1)-> 2W; Step II: X + 2W — Chemical Kinetics Chemistry Question
Question
A complex reaction: 2X + Y -> Z, takes place in two steps: Step I: X + Y -(K1)-> 2W; Step II: X + 2W -(K2)-> Z. If K1 << K2, order of reaction will be
Answer: B
💡 Solution & Explanation
Since K1 << K2, Step I is the slow step (rate-determining step). Rate of reaction = Rate of slow step = K1 [X] [Y]. The overall order is 1 + 1 = 2.
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