How much electricity in terms of Faraday is required to produce 20 g of Ca from molten `CaCl_(2)` ? (Atomic mass of Ca =40 )

Explanation

`CaCl_(2)hArrCa^(2+)+2Cl^(-)`
`underset("1 mole")(Ca^(2+))+underset(F)(2e)toCa`
40 g of Ca requires electricity =2F
20 g of Ca will require electricity
`=(2F)/(40)xx20`
=1F