In a kinetics lecture

CHEMISTRY · Multi-part · A Level · Chemistry · Rate equations · Rate equations

Problem

In a kinetics lecture, a generalized relationship between the overall reaction order

n

and the units of the rate constant

k

(assuming rate is measured in

\text{mol}\,\text{L}^{-1}\,\text{s}^{-1}

) was stated without proof. (a) Derive the general unit expression for

k

as a function of overall order

n

. (b) Apply the expression to predict units for a one-half-order reaction. (c) Evaluate the consistency of the reported units for

k

with

n=\tfrac12