One mole each of acetic acid and sodium acetate are dissolved in 1kg of water. Boiling point of the resulting… · ABC26PH0450

Subject: Physical Chemistry · Chapter: Gaseous State · Topic: Gaseous State – General · Exam: GATE 2005-2021 · Marks: 2 · Difficulty: Medium

One mole each of acetic acid and sodium acetate are dissolved in 1kg of water. Boiling point of the resulting solution is

(a)$100.51^{\circ} \mathrm{C}$

(b)$101.02^{\circ} \mathrm{C}$

(c)$101.53^{\circ} \mathrm{C}$

(d)$102.04^{\circ} \mathrm{C}$

Answer

Answer: C ✓ checked by 4AB · confidence medium

The source book printed B; on checking, C is correct — see the explanation.

Book printed (b).

Explanation

Acetic acid (ionisation suppressed by acetate) gives 1 mol particles, NaOAc gives 2: ΔTb = 0.51 × 3 = 1.53 °C, b.p. ≈ 101.53 °C (c).

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