Question

The rate constant of a reaction is $\text{mol} \,L^{-}\, S^{-1}$. The reaction is

• A. first order
• B. second order
• C. zero order
• D. pseudo first order

Answer 1

Answer: (C)

zero order

Answer 2

For zero order reaction,
Rate $=k[A]^{o}=k$
$\frac{\text { mol } L^{-1}}{S}=k$
$k=mol\, L^{-1}\, S^{-1}$
Hence, the unit of rate constant of zero order reaction is $mol \,L^{-1}\, S^{-1}$.