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Question: Answered & Verified by Expert
What is the unit of rate constant for the zero order reaction?
ChemistryChemical KineticsMHT CETMHT CET 2020 (15 Oct Shift 1)
Options:
  • A mol $\mathrm{dm}^{-3} \mathrm{t}^{-1}$
  • B $\mathrm{~mol} \mathrm{~d} \mathrm{~m}^{3} \mathrm{t}^{-1}$
  • C $\mathrm{t}^{-1}$
  • D $\mathrm{~mol} \mathrm{dm}^{-3} \mathrm{t}$
Solution:
1891 Upvotes Verified Answer
The correct answer is: mol $\mathrm{dm}^{-3} \mathrm{t}^{-1}$
For zero order reaction,
$$
k=\frac{[A]_{0}-[A]_{t}}{t}=\frac{m o l d m^{-3}}{t}=m o l d m^{-3} t^{-1}
$$

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