JEE Main levelSingle correct optionDifficulty 1 of 3ec06
Acidified water is electrolysed with inert electrodes and 2 faraday of charge is passed. The total volume of gas collected at STP (molar volume 22.4 L) is
A22.4 L
B33.6 L
C44.8 L
D67.2 L
Answer: B
Per faraday: 21 mol HX2 at the cathode and 41 mol OX2 at the anode, total 0.75 mol. For 2 F: 1.5 mol gas =1.5×22.4=33.6L.