Q. 7

How much copper can be obtained from 100 g of copper sulphate (CuSO4)?

Answer :

Given:

Mass of Copper Sulphate = 100g


Atomic Mass of Copper = 63.5g


Atomic Mass of Sulphur = 32g


Atomic Mass of Oxygen = 16g


Molecular Mass of CuSO4 = 63.5 + 32 + [4×16]


= 159.5g


63.5g of Copper [Cu] 159.5g of Copper Sulphate


X g of Copper [Cu] 100 g of Copper Sulphate


X = [100×63.5]/159.5


= 6350/159.5


= 39.812


≈39.81g


Therefore 39.81g of copper can be obtained from 100g of copper sulphate.


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