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Copper Sulfate from Copper Oxide and Dilute Sulfuric Acid
Copper sulfate is made industrially by dissolving copper oxides in dilute sulfuric acid (or copper metal in hot concentrated acid). CuO + H₂SO₄ → CuSO₄ + H₂O. From the solution it crystallises in its blue hydrous form, the pentahydrate, which is about 25% copper, 38% sulfate and 36% water by mass. Commercial copper sulfate is about 98% pure. It is used as a fungicide, for etching zinc, aluminium and copper printing plates, and to make ferrous sulfate.
中级
1–2 days
说明
1
1
Dissolve the oxide
Dissolve the oxide
Stir copper(II) oxide into dilute sulfuric acid until no more dissolves. CuO + H₂SO₄ → CuSO₄ + H₂O; the solution turns blue.
此步骤所需材料：
氧化铜1 as required
稀硫酸1 as required所需工具：
沉淀罐2
2
Filter
Filter
Filter off any undissolved oxide.
所需工具：
干酪布3
3
Crystallise
Crystallise
Concentrate the blue solution and let the copper sulfate crystallise in its blue hydrous form.
所需工具：
蒸发器
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