A) 1100 s
B) 2200 s
C) 3300 s
D) 4400 s
Correct Answer: C
Solution :
We know that \[k=\frac{2.303}{t}\log \frac{a}{a-x}\] \[{{10}^{-3}}=\frac{2.303}{t}\log \frac{a}{(a-\frac{2a}{3})},\,\,{{10}^{-3}}=\frac{2.303}{t}\log \,3\] \[{{10}^{-3}}=\frac{2.303}{t}\times 0.4771,\,\,t=\frac{2.303\times 0.4771}{{{10}^{-3}}}\] \[=3300\,\,\sec \]You need to login to perform this action.
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