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Q. No.The number of Faradays required for the deposition of 127 gram copper in copper sulphate solution is:
(Atomic weight of copper = 63.5)
1. 1 F
2. 2 F
3. 3 F
4. 4 F
(Atomic weight of copper = 63.5)
1. 1 F
2. 2 F
3. 3 F
4. 4 F
Subtopic: Faraday’s Law of Electrolysis |
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Aluminium oxide may be electrolysed at 1000 °C to furnish aluminium metal.
The cathode reaction is Al3+ + 3e- → Al.
To prepare 5.12 kg of aluminium metal by this method would require:
(Atomic mass = 27 amu; 1 faraday=96,500 Coulombs)
1. 5.49×101 C of electricity
2. 5.49×104 C of electricity
3. 1.83×107 C of electricity
4. 5.49×107 C of electricity
Subtopic: Faraday’s Law of Electrolysis |
62%
From NCERT
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