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When a small volume of NaOH solution is added to an acetate/acetic acid buffer system, which of the following occur? Choose o
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Answer #1

NaOH is a strong base.

When it is added to acetic acid /Aceate buffer , it reacts with acetic acid and produce acetate ions.

CH3CO2H (aq) + OH- (aq) < ------ > CH3Co2- (aq) + H2O (l)

So when added NaOH , concnetration of Acetate will increase and concnetation of acetic acid will decreases.

Since NaOH solution is addtive . so volume also increase.

addition of Base to buffer solution will increase the pH of solution .

so correct options are

i. The final volume of solution will increase (Option-1)

ii. The pH will increse (option-2)

iii. The concnetration of acetate will increse (Option-4)

iv. The concnetration of acetic acid will decrease. (option-6)

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