If 10 8 g of silver is deposited in a silver co... - JAMB Chemistry 1990 Question
If 10.8 g of silver is deposited in a silver coulometer volume of oxygen liberated is?
A
0.56 dm3
B
5.60 dm3
C
11.20 dm3
D
22.40 dm3
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Correct Option: A
Ag+ + e-
H = 108 g Ag
= 0.11 10.8 Ag
4OH → O2 + 2H2O + 4e
4F ↔ 1mole O2
4F = 22.4 dm3 χ 0.1 = 0.56 dm3
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