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Question

Solution of a monobasic acid has a pH = 5. If one mL of it diluted to 1 litre, what will be the pH of the resulting solution?

A
3.45
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B
6.96
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C
8.58
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D
10.25
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Solution

The correct option is D 6.96
pH=log[H+];[H+]=10pH
pH=5;[H+]=105
After dilution
1051000=108M
Total[H+]=108+107=1.1107
pH=log[H+]=log(1.1107)=6.96

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