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Question

The pH value of 0.001 M aqueous solution of NaCl is:

A
7
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B
4
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C
11
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D
unpredictable
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Solution

The correct option is A 7
NaCl is salt made from the neutralisation reaction of NaOH and HCI, both of which are strong electrolyte. Therefore, NaCl is a neutral salt i.e. there is no acidic or basic character in the salt when dissolved in water. It doesn't change the pH of the solution. Hence it will remains neutral i.e., pH = 7

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