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Identify the following : [5 MARKS] (a) black metallic oxide which reacts with hydrochloric acid to give a coloured solution. (b) two colourless gases which when mixed produce a white solid. (c) two gases which chemically combine to form a liquid. (d) a chloride which is soluble in excess of ammonium hydroxide. (e) the chemical in which gold can be dissolved |
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Answer» Identify the following : [5 MARKS] (a) black metallic oxide which reacts with hydrochloric acid to give a coloured solution. (b) two colourless gases which when mixed produce a white solid. (c) two gases which chemically combine to form a liquid. (d) a chloride which is soluble in excess of ammonium hydroxide. (e) the chemical in which gold can be dissolved |
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