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Question: Answered & Verified by Expert
$75 \%$ of a zero order reaction complete in $4 \mathrm{~h}$ $87.5 \%$ of the same reaction completes in
ChemistryChemical KineticsAIIMSAIIMS 2014
Options:
  • A $6 \mathrm{~h}$
  • B $12 \mathrm{~h}$
  • C $8 \mathrm{~h}$
  • D $2 \mathrm{~h}$
Solution:
1431 Upvotes Verified Answer
The correct answer is: $6 \mathrm{~h}$
Using the relation,
$t_{87.5 \%}=\frac{3}{2} t_{75 \%}$
$t_{87.5 \%}=\frac{3}{2} \times \frac{4}{1}=6 \mathrm{~h}$

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