1.

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

Answer»

Solution :`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


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