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If 10.8 g of silver is deposited in a silver coulometer volume of oxygen liberated…

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

Correct Answer: Option A

Explanation

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