Question

How many grams of cobalt metal will be deposited when a solution of cobalt (2) chloride is electrolyzed with a current of 10amperes for 109min?(1faraday=96500 C; atomic mass of co is 59u)

Answer 1

Answer:u can easily solve this by fact that 1 equivalent of charge deposits 1 equivalent of any substance.

Total charge flown = i × t

=> Q = 65400 C

No. Of equivalents = 65400 / 96500 = 0.677

No. Of eq. of Co deposited = 0.677

Mass of Co deposit = 0.677 × (59/2) =19.99 or 20g.

[ Here 59/2 = Equivalent mass = Atomic mass/ valency ].

Answer 2

Explanation:

hope this will help you