Which of the following mixture of solution can function as a buff… - Vidyadip

MCQ

Which of the following mixture of solution can function as a buffer solution ?

A
$50\, ml$ of $0.1\, M\, CH_3COOH + 50\, ml$ of $0.1\, M\, NaOH$
B
$50\, ml$ of $0.2\, M\, HCl + 50\, ml$ of $0.2\, M\, NaOH$
C
$50\, ml$ of $0.2\, M\, NH_3 + 50\, ml$ of $0.2\, M\, HCl$
✓
$50\, ml$ of $0.2\, M\, NH_3 + 50\, ml$ of $0.1\, M\, HCl$

✓

Answer

Correct option: D.

$50\, ml$ of $0.2\, M\, NH_3 + 50\, ml$ of $0.1\, M\, HCl$

d
It will behave as a mixture of $NH_4^+$ and $NH_3$, because some of the $NH_3$ would react with $HCl$ to form $NH_4^+$.

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