Practical Chemistry — Question 28

Question 3(2015)

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

(i) Salt 'A' reacts with conc. H₂SO₄ producing a gas which fumes in moist air and gives dense fumes with ammonia.

(ii) Salt 'B' reacts with dil. H₂SO₄ producing a gas which turns lime water milky but has no effect on acidified potassium dichromate solution.

(iii) When barium chloride solution is added to salt solution. 'C' a white precipitate insoluble in dilute hydrochloric acid is obtained.