JAMB - Chemistry (2014 - No. 22)

Calculate the quantity of electricity in coulombs required to liberate 10g of copper from a copper compound

[Cu=64, F = 96500 Cmol-1]

32395.5

30156.3

60784.5

15196.5

Cu\(^{2+}\) + 2e\(^-\) → Cu

If 2 x 96,500 C is required to produce 64g Cu

Then, X will be required to produce 10g Cu

X = \(\frac{{2}\times{96,500}\times{10}}{64}\)

X = 30, 156.25

X = 30,156.3 C