The equation shows a reaction that is second order in cap A and first order in cap b 2 cap A g plus cap b times g rightarrow cap c times g What is the rate law for the reaction?

The reaction is stated to be second order in A and first order in B. Put each reactant concentration in the rate law raised to its order: r = k[A]²[B]. The coefficient 2 in front of A in the balanced equation does not determine the reaction order, so the correct choice is r = kA²B.

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