Description : What does copper oxide produce at high temperature?
Last Answer : Laboratory preparation of copper oxide:copper salt such as CuSO4 reacts with alkali (NaOH) to generate Cu(OH)2, and then Cu(OH)2 is decomposed by heating to prepare CuO. CuSO4+2NaOH= ... by heating metallic copper in air or decomposing copper hydroxide, copper nitrate, basic copper carbonate, etc.