Q.

100 mL of 0.01 M CH3COOH is titrated with 0.01 M KOH. At what point pH is maximum?

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a

After addition of 100 mL of KOH

b

After addition of 75 mL of KOH

c

After addition of 50 mL of KOH

d

After addition of 25 mL of KOH

answer is A.

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Detailed Solution

Millimoles of CH3COOH = 1After addition of 1 millimole of KOH [as in (a)], CH3COOK formed, is hydrolysed forming basic solution which has pH > 7. In (b), (c), (d) mixture formed is an acidic buffer with pH<7.
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100 mL of 0.01 M CH3COOH is titrated with 0.01 M KOH. At what point pH is maximum?