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Ratio of number of Faradays of electricity required to deposit magnesium, aluminium and sodium in equimolar ratio on electrolysis of their respective molten salt is _____A. `2 : 3 : 2`B. `2 : 1 : 1`C. `2 : 3 : 1`D. `4 : 6 : 1` |
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Answer» Electrode reactions involved are `Mg^(+2) + 2e^(-) rarr Mg` `Al^(+3) + 3e^(-) rarr Al` `Na^(+) + e^(-) rarr Na` 1 mole of Mg requires 2 Faradays 1 mole of Al requires 3 Faradays. 1 mole of sodium requires 1 Faraday Ratio of number of Faradays `= 2 : 3: 1` |
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