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What are the SI units of the rate constant for a zero order reaction?
As^-1
BL^2 mol^-2 s^-1
CL mol^-1 s^-1
Dmol L^-1 s^-1
Answer & Solution
Correct answer: D. mol L^-1 s^-1
1. For zero order, $k = \dfrac{\text{Rate}}{[A]^0} = \text{Rate}$.
2. Rate itself has units $\text{mol L}^{-1}\text{s}^{-1}$.
3. Hence k has units $\text{mol L}^{-1}\text{s}^{-1}$.
_Source: NCERT Class 12 Chemistry Ch 3 "Chemical Kinetics", p.8_
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