1. Tardigrade
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  3. Chemistry
  4. When 3.86 A current is passed through an electrolyte for 50 min, 2.4 g of a divalent metal is deposited. The gram atomic weight of the metal (in grams) is

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Q. When 3.86 A current is passed through an electrolyte for 50 min, 2.4 g of a divalent metal is deposited. The gram atomic weight of the metal (in grams) is

EAMCETEAMCET 2007

Solution:

$ w=Zit $ or $ w=\frac{Eq.weight}{96500}\times i\times t $ or $ w=\frac{Atomic\,weight}{Valency\times 96500}\times i\times t $ Atomic weight $ =\frac{w\times valency\times 96500}{i\times t} $ $ =\frac{2.4\times 2\times 96500}{3.86\times 50\times 60}=40 $