Basic Concepts of Inorganic Chemistry, 2nd Edition

21

Problems on Inorganic Reactions

1. An inorganic salt (X) behaves in the following way:
   1. Sublimes on heating and the aquous solution of X is slightly acidic.
   2. Solution of X gives blood red solution with solid NH₄SCN containg B.
   3. X when heated strongly with solid K₂Cr₂O₇ and conc. H₂SO₄ gives off deep red vapour of a mpound C.
   4. The deep red vapours form yellow solution of compound D with NaOH solution.

   Identify X, B, C and D and give balance equation for each step.

2. White inorganic compound (X) is used as disinfectant and gives the following reactions:
   1. Forms greenish yellow gas with CO₂.
   2. A light brown coloured solution when KI and CH₃COOH is added to its suspension in water.

   Identify X and write balance chemical equations for the steps (i) and ...