1.

Identify the substance underlined, in each of the following cases:(i) Cation that does not form, a precipitate with ammonium hydroxide but forms one with sodium hydroxide.(ii) The electrolyte used for electroplating an article with silver. (iii) The particles present in a liquid such as kerosene, that is a non-electrolyte. (iv) An organic compound containing -COOH functional group. (v) A solid formed by reaction of two gases, one of which is acidic and the other basic in nature.

Answer»

(i) Cation that does not form, a precipitate with ammonium hydroxide but forms one with sodium hydroxide- Ca2+

(ii) The electrolyte used for electroplating an article with silver -  Solution of sodium argentocyanide.

(iii) The particles present in a liquid such as kerosene, that is a non-electrolyte - Molecules.

(iv) An organic compound containing -COOH functional group - Carbo-xylic acid. 

(v) A solid formed by reaction of two gases, one of which is acidic and the other basic in nature - Ammonium chloride (formed by combining vapours of ammonia with hydrogen chloride gas).



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