The activity of ' m ' molal CuSO₄ solution can be expressed in terms of its mean activity coefficient (γ ±)as: · ABC26PH0416

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

The activity of ' $m$ ' molal $\mathrm{CuSO}_{4}$ solution can be expressed in terms of its mean activity coefficient $\left(\gamma_{ \pm}\right)$as:

(a)$108 m^{5} \gamma_{ \pm}^{5}$

(b)$\mathrm{m}^{2} \gamma_{ \pm}^{2}$

(c)$16 m^{4} \gamma_{ \pm}^{4}$

(d)$4 m^{3} \gamma_{ \pm}^{3}$

Answer

Answer: B ✓ checked by 4AB · confidence high

The source book printed no answer; this one was worked out and checked — see the explanation.

Explanation

CuSO₄ is 1:1 (ν = 2): a = a₊a₋ = (mγ±)² = m²γ±².

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