NEET Chemistry Rate of Reaction MCQ Question
For the reaction 2A + B → C + D, the rate of formation of D was studied under different concentrations as shown. Experiment I: [A]=0.1 mol L–1, [B]=0.1 mol L–1, rate = 6.0 × 10–3 mol L–1 min–1. Experiment II: [A]=0.3 mol L–1, [B]=0.2 mol L–1, rate = 7.2 × 10–2 mol L–1 min–1. Experiment III: [A]=0.3 mol L–1, [B]=0.4 mol L–1, rate = 2.88 × 10–1 mol L–1 min–1. What is the correct rate law expression for this reaction?
rate = k[A]^2[B]^1
rate = k[A]^1[B]^0
rate = k[A]^0[B]^1
rate = k[A]^1[B]^2
Correct Answer
Detailed Explanation
By comparing the rates and concentrations in Experiments I, II, and III, it can be deduced that the reaction is second order with respect to A and first order with respect to B, leading to the rate law expression: rate = k[A]^2[B]^1.
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