Practice question
Question
What is the time (in seconds) required to deposit 1.175 g of sodium from molten NaCl using a current of 2 A? (Atomic mass of Na = 23.5 g/mol, F = 96500 C/mol)
Explanation
Na⁺ + e⁻ → Na . 1 mol Na (23.5 g) requires 1F. Moles = (1.175/23.5) = 0.05 mol , Charge = 0.05 × 96500 = 4825 C . t = (Q/I) = (4825/2) = 2412.5 s .
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