Gases evolved Flashcards
(26 cards)
When cold dilute nitric acid reacts with copper
Nitric oxide
When aluminium reacts with boiling conc. Caustic alkali solution
Hydrogen
When potassium sulphite is treated with dilute hcl
Sulphur dioxide
When Iron (II) sulphide is heated with dilute sulphuric acid
Hydrogen sulphide
When ammonium nitrate is heated
Water and nitrous oxide (H20 and N2O)
Thermal decomposition of nitric acid
Nitrogen dioxide and oxygen
Potassium nitrate is heated in a dry test tube
Oxygen
Zinc sulphide is treated with dilute sulphuric acid
Hydrogen sulphide
Dilute hydrochloride acid is added to a test tube containing magnesium ribboms
Hydrogen
Carbon is treated with conc. Sulphuric acid
Carbon dioxide and sulphur dioxide
Sulphur is treated with conc. Sulphuric acid
Sulphur dioxide
Thermal decomposition of silver nitrate
Nitrogen dioxide and oxygen
Copper reacts with conc nitric acid
Nitrogen dioxide
Ammonia gas is passed over heated copper oxide (black)
Nitrogen and water vapour (reddish brown metallic copper)
Copper bicarbonate is treated with hydrochloric acid
Carbon dioxide
Ammonia is burnt in oxygen
Nitrogen
Hydrochloride acid is heated with manganese dioxide
Gas evolved is greenish yellow and turns starch iodide paper blue black
Chlorine
Potassium sulphite reacts with hydrochloride acid
Sulphur dioxide
Sodium bicarbonate reacts with hydrochloric acid
Carbon dioxide
Action of nitric acid on carbon
Carbon dioxide and nitrogen dioxide
Cold and dilute nitric acid reacts with zinc/ copper/ iron
Nitric oxide NO
Hot and dilute (or concentrated) nitric acid reacts with zinc /copper/ iron
Nitrogen dioxide
Very dilute nitric acid reacts with Mg/ Mn
Hydrogen
Action of dilute sulphuric acid on metal sulphides
Hydrogen sulphide H2S
