Which of the following statements regarding copper salts is not true?
CHEMISTRY · Single correct · A Level · Chemistry · Transition metals and their chemistry · Transition metals and their chemistry
Problem
Which of the following statements regarding copper salts is not true?
(1) Copper(I) disproportionates to copper and copper(II) ions in aqueous solution.
(2) Copper(I) can be stabilised by the formation of complex compounds such as CuCl2− and Cu(CN)2−.
(3) Copper(II) oxide is a red powder.
(4) The water of crystallisation of copper sulphate is five.