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Which of the following mixtures will act...

Which of the following mixtures will act as buffer solution(s)?
(1) 50 mL 0.1(M) `NH_(3)+100mL" "0.025(M) HCl`
(2) 100mL 0.05(M) `CH_(3)COOH+50mL0.1(M)NaOH`.

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(1) Will act as a buffer solution.
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