AIPMT PRELIMS 2005 Chemistry Faraday's Laws MCQ Question
4.5g of aluminium (at. mass 27 amu) is deposited at cathode from Al³⁺ solution by a certain quantity of electric charge. The volume of hydrogen produced at STP from H⁺ ions in solution by the same quantity of electric charge will be:
22.4 L
32.8 L
5.6 L
11.2 L
Correct Answer
Detailed Explanation
Using Faraday's laws of electrolysis, the moles of electrons required to deposit aluminium are calculated. The same moles of electrons will produce hydrogen gas, and its volume at STP is determined.
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