A) \[1.73\,\times {{10}^{-4}}\,M{{\min }^{-1}}\]
B) \[3.47\times {{10}^{-4}}M\,{{\min }^{-1}}\]
C) \[3.47\times {{10}^{-5}}M\,{{\min }^{-1}}\]
D) \[7.5\times {{10}^{-4}}M\,{{\min }^{-1}}\]
Correct Answer: D
Solution :
\[k=\frac{2.303}{t}\log \frac{{{A}_{0}}}{A}\] \[\frac{2.303}{40}\log \frac{0.1}{0.005}\] \[=\frac{2.303}{40}\log =20=0.075\] Rate of reaction when concentration of X is 0.01 M will be \[=0.075\times 0.01=7.5\times {{10}^{-4}}M\,{{\min }^{-1}}\]
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