ElectrochemistryHard
Question
Four moles of electrons were transferred from anode to cathode in an experiment on electrolysis of water. The total volume of the two gases (dry and at STP) produced will be approximately (in litres)
Options
A.22.4
B.44.8
C.67.2
D.89.4
Solution
At Cathode : 2H2O + 2e- → H2 + 2OH-] × 2
At Anode : 2H2O → O2 + 4H+ + 4e-
H2 = 2 mole
O2 = 1 mole Total volume = 3 × 22.4 = 67.2 L.
At Anode : 2H2O → O2 + 4H+ + 4e-
H2 = 2 mole
O2 = 1 mole Total volume = 3 × 22.4 = 67.2 L.
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