CSEC Chemistry · May/June 2017 · Paper 1 · Question Q51
When copper(II) carbonate is heated alone in a dry test tube, a gas is evolved and a black residue is formed. This gas is expected to
- (A)turn red litmus blue
- (B)relight a glowing splint
- (C)decolourize acidified aqueous potassium manganate(VII)
- (D)form a white precipitate with aqueous calcium hydroxide
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