Question

How much electricity in terms of Faraday is required to produce 100 g of Ca from molten $CaCl_{2}?$

• A. 1 F
• A. (d) 5 F
• B. 2 F
• C. 3 F

Answer 1

(d)

Sol. $CaCl_{2} \rightarrow Ca^{2 +} + 2Cl^{-}$

$Ca^{2 +} + \underset{2moles}{2e^{-}} \rightarrow \underset{1Moles(40g)}{Ca}$

40 g 0of Ca $\equiv$ 2F

100 g of Ca $\equiv$ 5 F