A) 2 hr
B) 4 hr
C) 1/2 hr
D) 1/4 hr
Correct Answer: C
Solution :
\[K=\frac{2.303}{1\ hr}\log \frac{100}{25}=\frac{2.303}{t}\log \frac{100}{50}\] \[\therefore \ \ \log 4=\frac{1}{t}\log 2\] \[\therefore \ \ 2\log 2=\frac{1}{t}\log 2\]; \[t=\frac{1}{2}hr\].You need to login to perform this action.
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