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  4. How many grams of cobalt metal will be deposited when a solution of cobalt (II) chloride is electrolyzed with a current of 10 amperes for 109 minutes (1 Faraday = 96,500 C; Atomic mass of Co = 59 u) :

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Q. How many grams of cobalt metal will be deposited when a solution of cobalt (II) chloride is electrolyzed with a current of 10 amperes for 109 minutes (1 Faraday = 96,500 C; Atomic mass of Co = 59 u) :

NEETNEET 2013Electrochemistry

Solution:

$W =\frac{I t E}{96500}$
$=\frac{10 \times 109 \times 60 \times 59}{96500 \times 2}$
$=19.99 \approx 20$