Q47 / 150 · MHT CET 2024 (09 May Shift 2) · Chemistry
What is the quantity of electricity required to produce 4.8 g of Mg (molar mass $=24 \mathrm{~g} \mathrm{~mol}^{-1}$ ) from its salt solution?
- A10 F
- B4 F
- C1 F
- Correct answerD0.4 F
Solution
$\mathrm{Mg}^{2+}+2 \mathrm{e}^{-} \longrightarrow \mathrm{Mg}$
2 F will deposit 1 mole Mg (i.e., 24 g of Mg) Hence, 0.4 F of electricity will be required to deposit 4.8 g of Mg from it's salt solution.
2 F will deposit 1 mole Mg (i.e., 24 g of Mg) Hence, 0.4 F of electricity will be required to deposit 4.8 g of Mg from it's salt solution.
Hence, the correct answer is option: 'D'.