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100 mL of ( M / 1 0) aqueous solution of...

100 mL of ( M / 1 0) aqueous solution of a monoprotic acid is titrated with a solution of NaOH. When one-third of the acid is neutralised, pH of the solution becomes 3.9. pH of the solution at half-neutralisation point is-

A

5.8

B

4.2

C

3.6

D

6.3

Text Solution

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The correct Answer is:
B
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