Q113 · CSIR-NET Chemistry, December 2019

Paper: CSIR-NET December 2019 · Subject: Physical Chemistry · Chapter: Electrochemistry · Topic: Electrochemistry – General · Marks: 2 · Difficulty: Easy

In common glass electrode, alkaline error caused at $\mathrm{pH}>10$ is least for
(a)0.01 M NaCl
(b)1.0 M NaCl
(c)1.0 M LiCl
(d)1.0 M KCl
Answer
Answer: D ✓ checked by 4AB · confidence medium
Explanation
The glass membrane responds to Na⁺ most strongly (then Li⁺); K⁺ is discriminated best, so the alkaline error at high pH is least in 1.0 M KCl.

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