A) 24.1 s
B) 34.1 s
C) 44.1 s
D) 54.1 s
Correct Answer: A
Solution :
\[K=\frac{2.303}{({{t}_{2}}-{{t}_{1}})}\log \left( \frac{a-{{x}_{1}}}{a-{{x}_{2}}} \right)\] \[K=\frac{2.303}{(20-10)}\log \left( \frac{0.04}{0.03} \right)\] \[K=\frac{2.303\times 0.1249}{10}\] \[\frac{2.303\times \log 2}{{{t}_{1/2}}}=\frac{2.303\times .1249}{10}\] \[{{t}_{1/2}}=\frac{0.3010\times 10}{0.1249}=24.1\,\sec \]You need to login to perform this action.
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