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6.2. Equilibrium - II (icon Equilibrium) — Chemistry STD 11 Science — Question

Rajasthan BoardEnglish MediumSTD 11 ScienceChemistry6.2. Equilibrium - II (icon Equilibrium)1 Mark
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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