JAMB - Chemistry (2014 - No. 23)
How many faraday of electricity is required to produce 0.25 mole of copper?
1.00F
0.01F
0.05F
0.50F
คำอธิบาย
Cu → Cu2+ + 2e
1mole Cu requires 2f
0.25 mole Cu requires x
x = 0.25x2/1 = 0.50f
1mole Cu requires 2f
0.25 mole Cu requires x
x = 0.25x2/1 = 0.50f