A buffer solution consists of 1 mole each of HA and its conjugate base A–. Addition of which of the following decreases the pH of buffer?

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0.1 mole of HA

0.1 mole A-

0.1mole of NaOH

Water

answer is A.

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Detailed Solution

pH of an acidic buffer is given as on increasing '[acid]', PH of the solution decreases.

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