If the cost of electricity required to discharge 10g of a...
If the cost of electricity required to discharge 10g of an ion X3+ is N20.00, how much would it cost to discharge 6g of ion Y2+?
[1 faraday = 96,500C, atomic masses are X = 27, Y = 24]
N10.00
N6.00
N20.00
N9.00
Correct answer is D
X3+ + 3e− → X
3F = 27g
xF = 10g
x3=1027⟹x=109F
109F ≡ N20.00
1F is equivalent to x
1109=x20
910=x20⟹x=N18.00
1F is equivalent to N18.00.
Y2+ + 2e− → Y
2F = 24g
xF = 6g
x = 6×224=12F
1F = N18.00
12F = 12×N18.00
= N9.00
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