1. Salt ‘A’ reacts with cone. H2SO4 producing gas which fumes in moist air and gives dense fumes with ammonia.

Question

Identify the anion present in each of the following compounds: A, B, C :

1. Salt ‘A’ reacts with cone. H2SO4 producing gas which fumes in moist air and gives dense fumes with ammonia.

2. Salt ‘B’ reacts with dil. H2SO4 producing a gas which turns lime water milky but has no effect on acidified potassium dichromate solution.

3. When barium chloride solution is added to salt solution. ‘C’ a white precipitate insoluble in dilute hydrochloric acid is obtained.

Answer 1

1. Chloride ion (Cl– )

2. Carbonate ion (CO3 2) or bicarbonate ion (HCO3 -1 )

3. Sulphate ion ( SO4 2- )