Chemistry
A gas 'A' reacts with another gas 'B' in the presence of a catalyst to give a colourless gas 'C'. The gas 'C' when comes in contact with air produces a brown gas 'D'. The solution of 'A' in water turns red litmus blue. Explain the observations.
Related Questions
When ammonium hydroxide is added to solution B, a pale blue precipitate is formed. This pale blue precipitate dissolves in excess ammonium hydroxide giving an inky blue solution. What is the cation (positive ion) present in solution B? What is the probable colour of solution B.
When an ammonium salt is warmed with sodium hydroxide solution, a gas is evolved. State three ways in which you could identify this gas.
Name a compound prepared by ammonia and is used as :
(a) Explosive
(b) Fertilizers
(c) Medicine
(d) Laboratory reagent
(i) Name the common refrigerant. How does it deplete ozone layer?
(ii) What is the alternative of chlorofluorocarbon carbon?
(iii) State the advantages and disadvantages of using ammonia as refrigerant?