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Question

Addition of sodium acetate to 0.1 M acetic acid will cause

A
Increase in pH
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B
Decrease in pH
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C
No change in pH
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D
Change in pH that cannot be predicted
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Solution

The correct option is A Increase in pH
Addition of sodium acetate in acetic acid solution, due to common ion NH+4, the supressed, ionisation of acetic acid so concentration of [H+] decreases. Hence, pH of solution increases.

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