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

Gujarat BoardEnglish MediumSTD 11 ScienceJEESTD 11 - 6.2. Equilibrium - II (icon Equilibrium)4 Marks
MCQ
A buffer solution can be prepared from a mixture of
  • A
    Sodium acetate and acetic acid in water
  • B
    Sodium acetate and hydrochloric acid in water
  • C
    Ammonia and ammonium chloride in water
  • ✓
    $(a) $ and $(c)$ both
✓

Answer

Correct option: D.
$(a) $ and $(c)$ both
d
Correct options are A) and C)

Hint: A buffer solution can be prepared by mixing a weak acid or base with the salt of a strong base or strong acid.

Explanation:

Sodium acetate and acetic acid in water can form buffer solution because sodium acetate is a salt of strong acid $NaOH$ and weak acid acetic acid.

$CH _3 COONa + CH _3 COOH$

Sodium acetate and hydrochloric acid in water cannot form a buffer solution because $HCl$ is a strong acid.

Ammonia and ammonium chloride in water can from buffer solution because ammonia is a weak base and ammonium chloride is a salt of ammonia and strong acid $HCl$.

$NH _4 Cl + NH _3$

Ammonia and sodium hydroxide in water cannot form buffer solutions because both are bases.

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