Q36 · CSIR-NET Chemistry, June 2011
Paper: CSIR-NET June 2011 · Subject: Physical Chemistry · Chapter: Electrochemistry · Topic: Debye Huckel · Marks: 2 · Difficulty: Easy
For an aqueous solution at 25°C, the Debye-Huckel limiting law is given by
(a)$\log \gamma_{ \pm}=0.509\left|Z_{+} Z_{-}\right| \sqrt{\mu}$
(b)$\log \gamma_{ \pm}=0.509\left|Z_{+} Z_{-}\right| \mu$
(c)$\log \gamma_{ \pm}=-0.509\left|Z_{+} Z_{-}\right| \sqrt{\mu}$
(d)$\log \gamma_{ \pm}=-0.509\left|Z_{+} Z_{-}\right| \mu^{2}$
Answer
Answer: C ✓ checked by 4AB · confidence high
The source book printed no answer; this one was worked out and checked — see the explanation.
Explanation
Debye–Hückel limiting law in water at 25 °C: log γ± = −0.509|z₊z₋|√μ (c).
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