A) 4 times
B) 0.25 times
C) 2 times
D) 0.5 times.
Correct Answer: D
Solution :
: \[\underset{1M}{\mathop{C{{H}_{3}}COOH}}\,+\underset{2M}{\mathop{C{{H}_{3}}OH}}\,\to C{{H}_{3}}COOC{{H}_{3}}+{{H}_{2}}O\] \[{{r}_{1}}=k[C{{H}_{3}}COOH][C{{H}_{3}}OH]=k(1)(2)=2k\] When solution is diluted with equal volume of water, concentration is reduced to half. \[\therefore \] \[{{r}_{2}}=k\left( \frac{1}{2} \right)\left( \frac{2}{2} \right)=\frac{k}{2}\] \[\frac{{{r}_{1}}}{{{r}_{2}}}=\frac{2k}{k/2}=4\] \[\Rightarrow \] \[{{r}_{2}}=\frac{{{r}_{1}}}{4}=0.25{{r}_{1}}\]You need to login to perform this action.
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