Question

name the following The basic radical which gives chalky white precipitate with little sodium hydroxide solution.

Answer 1

Answer:

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Explanation:

(a)(i) Chemical test for ammonia:

If a rod dipped in concentrated hydrochloric acid is brought near ammonia gas, dense white fumes of ammonium chloride (NH4Cl) are formed.

(ii) Chemical test for Sulphur dioxide:

It decolorizes pink coloured potassium permanganate solution.

Answer 2

Chemical test of ammonia - Ammonium ions can be identified in a solution by adding dilute sodium hydroxide solution and gently heating. If ammonium ions are present, they will be converted to ammonia gas. Ammonia has a characteristic choking smell. It also turns damp red litmus paper or damp universal indicator paper blue.

Chemical test for sulphur - It decolorizes pink coloured potassium permanganate solution.

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