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Question

The reaction CH3COOC2H5+NaOHCH3COONa+C2H5OH
is allowed to take place with initial concentrations of 0.2 mole/lit of each reactant. If the reaction mixture is diluted with water so that the initial concentration of each reactant becomes 0.1 mole/lit, the rate of the reaction will be:

A
1/8 th of the original rate
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B
1/4 th of the original rate
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C
1/2 th of the original rate
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D
same as the original rate
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Solution

The correct option is B 1/4 th of the original rate
Since rate of reaction will depend on the concentration of both CH3COOC2H5 and NaOH,

rate = k [CH3COOC2H5] [NaOH].

And since concentration of each reactant reduces to half, original rate of reaction reduces to one-fourth.

Option B is correct.

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