Copper(II) Sulfate

Copper(II) sulfate, also called copper(II) sulphate, is the group of inorganic chemical compounds with the general formula CuSO4(H2O)x (where x is 0 to 5). It is most commonly encountered as the blue colored pentahydrate.

Synthesis
Copper(II) sulfate is commonly produced from copper metal and hot, concentrated sulfuric acid.However, it can also be made by reacting copper(II) oxide, copper(I) oxide, or basic copper(II) carbonate with hot concentrated sulfuric acid.

Reactions
Copper(II) sulfate reacts with sodium carbonate or sodium bicarbonate in an aqueous solution to produce basic copper(II) carbonate.It also reacts with sodium hydroxide, forming copper(II) hydroxide. However, the final product is often contaminated with sodium hydroxide, which can be prevented by adding small amounts of ammonium chloride to the reaction.In aqueous solution, copper(II) sulfate reacts with metals such as magnesium, iron, zinc, or aluminium to precipitate copper metal.A similar reaction takes place with ascorbic acid.

It reacts with concentrated ammonia solution to form the coordination compound tetraaminecopper(II) sulfate.At 650°C, copper(II) sulfate decomposes into copper(II) oxide and sulfur trioxide.

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