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Basic Buffer Action

In a mixture ...

Question

In a mixture of a weak acid and its salt, the ratio of the concentration of acid to salt is increased ten-fold. The pH of the solution:

A

Decrease by one

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B

Increase by one-tenth

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C

Increases by one

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D

Increases by ten-fold

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Solution

The correct option is A Decrease by one
As given, $\frac{[S a l t]}{[A c i d]} = \frac{1}{10}$
So, $p H$ will decreases by one.

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