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A 200W, 110 V incadescent lamp was connected with an electrolytic cell containing ZnCl_(2) . What weight of metal will be deposited on passing current for 1 hour? (At. Wt. of Zn = 65.4)

Answer»

Solution :Current strength in ampere = Watt/Volt = `200//110 = 1.818`
Time = `1 xx 60 xx 60 = 3600 "sec"`, QUANTITY = `1.818 xx 3600 = 6545 ` coul.
Zince is divalent. `193000` coul are required to deposite 65.4g of zinc.
WEIGHT of metal deposite USING 6545 coud= `(6545 xx 65.4)/(193000) = 2.219 g` .


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