Copper(II) sulfate crystals, CuSO4.5H₂O, can be made by heating copper(II) oxide with dilute

Chemistry

1 answer:

Harrizon [31]1 year ago

4 0

8.05 g of CuSO₄ is the highest mass of crystals.

a) CuO(solid) + H₂SO₄(aqueous) → CuSO₄(aqueous) + H₂O(liquid)

Molecular weight,

CuO = 79 g

Molar weight of CuSO₄ = 159 g,

79 g of CuO reacted with H₂SO₄ 159 g to form CuSO₄.

∴ 4 g of CuO

= 159/79 × 4

= 8.05 g of CuSO₄

b) Percentage yield and Theoretical yield :

The Theoretical yield:

CuSO₄ of 159.6 g → CuSO₄.5H₂O of 249.5 g

8.05 g = 249.5 × 8.05 ÷ 159.6 = 12.58 g

And the percentage yield = Weight of the product ÷ Theoretical yield × 100

= 11.25 ÷ 12.58 × 100

= 89.42%

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