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Auto Protolysis of Water

A pH titrat...

Question

A $p H$ titration curve for 0.10 M 4-aminobutanoic acid hydrochloride solution against $N a O H$ is shown below. Select the buffer region/s in the following titration.

Around point A

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Around point B

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Around point C

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Around point D

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Around point E

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Solution

The correct options are
A Around point B
C Around point D
In buffer region pH does not change with concentration of acid/base
At the points B and D the curve is flat and does not change significantly with change in NaOH con.

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