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if 9g of H2o IS ELECTROLYSED COMPLETELY WITH 50 PERCENT CURRENT EFFICIENCY A- 1F ELECTR WILL BE NEEDED B- 2F elect nedded c-5.6 L of O2 at STP will be formed

if 9g of H2o IS ELECTROLYSED COMPLETELY WITH 50 PERCENT CURRENT EFFICIENCY
A- 1F ELECTR WILL BE NEEDED
B- 2F elect nedded
c-5.6 L of O2 at STP will be formed

Grade:12

1 Answers

Naveen Kumar
askIITians Faculty 60 Points
9 years ago
H2O.................> H2..+(1/2) * O2
9g
1/2 mole.........1/2mol.......1/4 mole
for ¼ mole of O2, volume=22.4*1/4=5.6 L at STP
Now for the given equation electron invoved for 1 mole of H2O=2mole
so for ½ mole, moles of e-=1 mole=1F
But efficiency =50%
so 2F of charge is required.

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