We’re being asked to determine the units of the rate constant.
First, we need to determine the overall rate of the reaction.
This is simply the sum of the exponents of each species in the rate law.
For the rate law:
rate = k[A]2[B]
The rate law for a reaction is rate = k[A]2[B]. The units of the rate constant when the concentrations are measured in mol/L and the time in seconds are
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