For Na^+, the value of symbol λ°_m is 50.0 Ω^–1 cm^2 mol^–1. The speed of Na^+ ion in the solution, — Electrochemistry Chemistry Question
Question
For Na^+, the value of symbol λ°_m is 50.0 Ω^–1 cm^2 mol^–1. The speed of Na^+ ion in the solution, if in the cell, electrodes are 5 cm apart and to which a potential of 19.3 volt is applied is
Answer: A
💡 Solution & Explanation
Ionic mobility u = λ°_m / F = 50.0 / 96500 cm^2 V^–1 s^–1. Electric field E = V / l = 19.3 / 5 = 3.86 V/cm. Speed v = u × E = (50 / 96500) × 3.86 = 193 / 96500 = 2 × 10^–3 cm/s. Therefore, correct answer is A.
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