How many coulombs of electricity is required to produce $1 \mathrm{~g}$ Na metal from its ions? (Atomic mass…

How many coulombs of electricity is required to produce $1 \mathrm{~g}$ Na metal from its ions? (Atomic mass $\mathrm{Na}=23$ )
  1. $1516 \mathrm{C}$
  2. 3132 C
  3. 2088 C
  4. 4196 C

Solution

$\begin{aligned} & \mathrm{Na}^{+}+\mathrm{e}^{-} \rightarrow \mathrm{Na}_{(\mathrm{s})} \\ & \frac{1}{23} \mathrm{~mol} \quad \frac{1}{23} \mathrm{~mol} \mathrm{e}^{-} \\ & =\frac{1}{23} \times 96500 \\ & =4195.6 \mathrm{C}\end{aligned}$

Asked in: MHT CET 2022 (06 Aug Shift 1)

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