The dissolved copper then binds to one of the sulfate ions to make copper (II) sulfate ... radical and the chloride ions attacking the solid copper metal and forming a complex known as ...

An iron nail is placed in a solution of blue copper(II) sulfate. Over time, a brown solid appears and the solution becomes colourless. This is because copper and a solution of iron(II) sulfate forms.

The reaction between anhydrous copper(II) sulfate and water is used as a test for water. The white solid turns blue in the presence of water. A similar reversible reaction takes place between ...