JAMB - Chemistry (1997 - No. 20)
How many Faraday of electricity are required to deposit 0.20 mole of nickel, if 0.10 Faraday of electricity deposited 2.98g of nickel during electrolysis of its aqueous solution?
(Ni = 58.7, 1F = 96 500 C mol-)
(Ni = 58.7, 1F = 96 500 C mol-)
0.20
0.30
0.40
0.50
Explanation
No of mole → (2.98)/(58.7) ..............0.1
2.0 .................x
∴ x = (0.2)/(2.98) x 58.7 x 0.40
2.0 .................x
∴ x = (0.2)/(2.98) x 58.7 x 0.40
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