The unit of rate constant for a zero order reaction is

The unit of rate constant for a zero order reaction is
  1. $\mathrm{mol} \mathrm{L}^{-1} \mathrm{~s}^{-1}$
  2. $\mathrm{L} \mathrm{mol}^{-1} \mathrm{~s}^{-1}$
  3. $\mathrm{L}^2 \mathrm{~mol}^{-2} \mathrm{~s}^{-1}$
  4. $\mathrm{s}^{-1}$

Solution

For zero order reaction, Rate $=k \cdot[\text { Reactants }]^0$ $\therefore$ Rate $=k$ and unit of $k=\mathrm{mol} \mathrm{L}^{-1} \mathrm{~s}^{-1}$.

Asked in: NEET 2011 (Mains)

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