Q89 · CSIR NET Chemistry, December 2016
Paper: CSIR NET December 2016 · Subject: Physical Chemistry · Chapter: Electrochemistry · Topic: Conductance · Marks: 2 · Difficulty: Medium
The ionic mobilities of $\mathrm{NH}_{4}^{+}$and $\mathrm{HCO}_{3}^{-}$are $6 \times 10^{-4} \mathrm{V}^{-1} \mathrm{s}^{-1}$ and $5 \times 10^{-4} \mathrm{V}^{-1} \mathrm{s}^{-1}$, respectively. The transport numbers of $\mathrm{NH}_{4}^{+}$and $\mathrm{HCO}_{3}^{-}$are, respectively
(a)0.545 and 0.455
(b)0.455 and 0.545
(c)0.090 and 0.910
(d)0.910 and 0.090
Answer
Answer: A ✓ checked by 4AB · confidence high
Explanation
t₊ = u₊/(u₊ + u₋) = 6/11 = 0.545; t₋ = 0.455.
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