For the reaction AB(g) —>A(g) + B(g) the rate law is determined to be rate =k[AB]^2 and k=0.255 L/mol-min. If the initial concentration of AB is 1.00M, how long will it take for the concentration of AB to fall to 0.40M?

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For the reaction AB(g) —>A(g) + B(g) the rate law is determined to be rate =k[AB]^2 and k=0.255 L/mol-min. If the initial concentration of AB is 1.00M, how long will it take for the concentration of AB to fall to 0.40M?
Expert Solution
Step 1

In rate law expression, when rate is directly proportional to the square of the the reactant concentration then the reaction is known as second order reaction.

Example:

A → B

Rate = k A2 

Rate is directly proportional to the square of the reactant concentration [A].

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