Posted by elvis on .
A reaction has a rate law, rate = kA]B]^2 What is the overall order of the reaction?
a. 2 b. 3 c. 0 d. 1 e. 4
chemistry  DrBob222, Friday, February 17, 2012 at 10:53pm
The overall is the sum of the orders of each component.
still don't get it but guessing A

chemistry 
DrBob222,
What is there to get? I think your problem may be that you don't know how to read the rate law equation. The equation is 1st order with respect to A (I know that because the exponent of A in the rate law equation is 1) and it is 2nd order with respect to B (similarly, the exponent is 2). Then 1 + 2 = 3. So 3rd order over all.