Calculate the quantity of electricity required to produced $0.42 \mathrm{~g}$ $\mathrm{Ag}$ at cathode…

Calculate the quantity of electricity required to produced $0.42 \mathrm{~g}$ $\mathrm{Ag}$ at cathode during electrolysis of $\mathrm{AgNO}_3$ solution. (molar mass Ag $=108 \mathrm{~g} \mathrm{~mol}^{-1}$ )
  1. $965.0 \mathrm{C}$
  2. $470.0 \mathrm{C}$
  3. $257.1 \mathrm{C}$
  4. 375.3 C

Solution

$\mathrm{W}=\frac{\mathrm{EQ}}{\mathrm{F}}$ $0.42=\frac{108}{96500} \times Q$ $\mathrm{Q}=375.3 \mathrm{C}$

Asked in: MHT CET 2022 (05 Aug Shift 2)

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