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A 100 W - 100 V incandescent lamp is con...

A 100 W - 100 V incandescent lamp is connected in a series with an electrolytic cell containing cadmium sulphate solution. What mass of cadmium will be deposited at the electrode by a current flowing for 10 h ? `("Molar mass of Cd "= "112.4 g.mol"^(-1))`

Text Solution

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`"Ampere "=("watt")/("volt")=(100)/(110)=0.909`
and 10 h `=10xx3600xx36000s.`
`therefore" Quantity of electricity "=0.909xx36000=32727C."`
Equivalent mass of Cd in `CdSO_(4)=(112.4)/(2)=56.2.` Hence,
96500 (= 1 F) of electricity will deposit 56.2 g of Cd.
and 32724 C of electricity will deposit `(56.2)/(96500)xx32724=19.05g" of Cd."`
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