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Question

20 mL of 0.1 N HCl is mixed with 20 mL of 0.1 N KOH. The pH of the solution would be:

A
0
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B
7
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C
2
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D
9
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Solution

The correct option is B 7
As we know, pH=log[H+]

For neutral solution, pH=7

For acidic solution, pH<7

For basic solution, pH>7

Here, [H+]=20×0.1=[OH]

So, it will be a neutral solution with pH=7.

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