MCQ
A substance (initial concentration $= a$) reacts according to zero order kinetics. The time taken for the completion of reaction is nearly
- ✓$a/k$
- B$a/2k$
- C$k/a$
- D$2k/a$
✓
Answer
Correct option: A.
$a/k$
a
${{\text{t}}_{{\text{completion }}}} = 2 \times {{\text{t}}_{1/2}}$
${{\text{t}}_{{\text{completion }}}} = 2 \times {{\text{t}}_{1/2}}$
( $\because $ Rate is constt. in zero order)
${{\text{t}}_{{\text{completion }}}} = 2 \times \frac{{\text{a}}}{{2{\text{k}}}} = \frac{{\text{a}}}{{\text{k}}}$
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