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Q.

The pH of 0.001 M CH3COOH is

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a

Between 1 and 3

b

Between 3 and 7

c

11

d

7

answer is C.

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Detailed Solution

pH = -log[H+] = -log[0.001] = 3.

But, CH3COOH is a weak acid which dissociates partially & it has Ka value < 1.

CH3COOH(aq)CH3COO(aq)-+H(aq)+

 For most of the acid pH value is always less than 7.

Hence, the correct option is option 3) Between 3 and 7.

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