Q87 · CSIR-NET Chemistry, June 2019

Paper: CSIR-NET June 2019 · Subject: Physical Chemistry · Chapter: Thermodynamics · Topic: Partial Molar Quantities · Marks: 2 · Difficulty: Medium

The chemical potential $(\mu)$ of a 2 molar $\mathrm{Na}_{2} \mathrm{SO}_{4}$ solution is expressed in terms of mean ionic activity co-efficient $\left(\gamma_{\pm}\right)$ as
(a)$\mu_{0}+5 \mathrm{RT} \ln 2+3 \mathrm{RT} \ln \gamma_{\pm}$
(b)$\mu_{0}+53 \mathrm{T} \ln 2+3 \mathrm{RT} \ln \gamma_{\pm}$
(c)$\mu_{0}++3 \mathrm{RT} \ln \gamma_{\pm}$
(d)$\mu_{0}++4 \mathrm{RT} \ln \gamma_{\pm}$
Answer
Answer: A ✓ checked by 4AB · confidence high
Explanation
μ = μ° + 5RT ln 2 + 3RT ln γ± (a).

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