A reaction has a rate law of Rate = (1.25 M⁻¹s⁻¹)[A][B]. What is the rate of the reaction if [A] = 0.301 M and [B] = 0.280 M?

Answer 1

Rate = k[A][B]

We can tell the reaction is 1st order in A and in B because of the units of the rate constant k. The units are M^-1s^-1 which is consistent with an overall order of 2. So, since there are 2 reactants, it will be 1st order in each.

Rate = 1.25 M^-1s^-1(0.301 M)(0.280 M)

Rate = 0.105 Ms^-1