1.

If 54 g of silver is deposited during an electrolysis reaction, how much aluminium will be deposited by the same amount of electric current?

Answer»

(a) 2.7 G
(b) 4.5 g
(C) 27 g
(d) 5.4 g

Solution :1 F DEPOSITS 108 g of Ag `(Ag^(+) + e^(-) to Ag )`
54 g of Ag will be deposited by `1/108xx54=1/2F`
3 F deposite 27 g of Al (`Al^(3+) + 3E^(-) to Al`)
`1/2F` will deposit `27/3xx1/2`=4.5 g of Al


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