Identify the following substances:
(i) An alkaline gas A which gives dense white fumes with hydrogen chloride.
(ii) A dilute acid B which does not normally give hydrogen when reacted with metals but does give a gas when it reacts with copper.
(iii) Gas C has an offensive smell like rotten eggs
(iv) Gas D is a colourless gas which can be used as a bleaching agent
(v) Liquid E can be dehydrated to produce ethene
(i) Gas A is ammonia gas.
(ii) Acid B is nitric acid.
(iii) Gas C is hydrogen sulphide.
(iv) Gas D is sulphur dioxide.
(v) Liquid E is ethanol.
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