A) \[\frac{0.693}{0.5\,k}\]
B) \[\frac{\log \,2}{k}\]
C) \[\frac{\log \,2}{k\sqrt{0.5}}\]
D) \[\frac{\ln \,2}{k}\]
Correct Answer: D
Solution :
| [d] For first order reaction |
| \[k=\frac{2.303}{t}\log \frac{a}{(a-x)}\] |
| \[{{t}_{1/2}}=\frac{2.303}{k}\log \frac{a}{a-\frac{a}{2}}\] |
| \[=\frac{2.303}{k}\log \,2\] |
| \[or\frac{\ln \,2}{k}\] |
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