Multiple choice

Two faradays of electric current can produce

  1. 20 g of calcium from calcium sulphate

  2. 81 g of aluminium from aluminium oxide

  3. 48 g of magnesium from magnesium chloride

  4. 2 g of hydrogen gas from aqueous hydrogen chloride

  5. 35.5 g of chlorine gas from aqueous hydrogen chloride
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D Correct answer
Explanation

Two faradays of electric current can produce 2 g (1 mole of hydrogen) of hydrogen gas.

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