A) 12.1 h
B) 9.7 h
C) 11.3 h
D) 1.8 h
Correct Answer: C
Solution :
\[K=1.7\times {{10}^{-5}}{{s}^{-1}}\] \[{{t}_{1/2}}=\frac{0.693}{K}=\frac{0.693}{1.7}\times {{10}^{5}}=11.32h\]
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