Question

What are the units of k in the following expression: rate = k [A][B]?

s-1

M-1s-1

M-2s-1

M

Answer 1

The units for k need to cancel when multiplied by [A][B] to leave the units for rate which should be M·s^-1

(M^-1 ·s^-1)*(M)*(M) = M·s^-1