For the reaction A ( g ) + 2 B ( g ) → 2 C ( g ) , the initial rates of C formation were measured under different initial concentrations of A and B . The experimental data is as follows: • Experiment

Question

For the reaction A ( g ) + 2 B ( g ) → 2 C ( g ) , the initial rates of C formation were measured under different initial concentrations of A and B . The experimental data is as follows: • Experiment 1: [ A ] = 0.30 m o l L − 1 , [ B ] = 0.30 m o l L − 1 , Rate of C formation = 0.10 m o l L − 1 s − 1 • Experiment 2: [ A ] = 0.30 m o l L − 1 , [ B ] = 0.60 m o l L − 1 , Rate of C formation = 0.40 m o l L − 1 s − 1 • Experiment 3: [ A ] = 0.60 m o l L − 1 , [ B ] = 0.30 m o l L − 1 , Rate of C formation = 0.20 m o l L − 1 s − 1 Determine the rate equation for this reaction.

TestHub · Accepted Answer

Doubling B quadruples the rate, so B is second order; doubling A doubles the rate, so A is first order. Hence Rate = k[A][B]².

Chemistry - Chemical Kinetics Question with Solution | TestHub

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