![]() ![]() (d) Nitrates: Upon reaction with conc.H 2SO 4 nitrates evolve NO 2 gas. ![]() (c) Iodides: Iodide salts react with conc. (b) Bromides: Bromide salts react with conc. H 2SO 4 to evolve hydrogen chloride (HCl) gas. (a) Chlorides: Chloride salts react with conc. H 2SO 4, warm a pinch of the salt with conc. H 2SO 4, nitric oxide (NO) gas is evolved which readly gives brown fumes of NO 2 with the oxygen of the air. (d) Nitrite: On treating solid nitrite with dil. (c) Sulphite: On heating solid sulphite with dil.H 2SO 4, SO 2 gas is evolved (b) Sulphide: Sulphides when treated with dil. (a) Carbonate: On treating the solid carbonate, CO 2 is given off in the cold with brisk effervescence. These gases on identification indicate the nature of the anion present in the salt. Chemical Reactions Involved in Dil.H 2SO 4 Test:ĭilute H 2SO 4 decomposes carbonates, sulphides, sulphites and nitrites in cold to give gases. Thus, these anions may be identified by performing the following tests below: 1) Dil. These are, therefore, identified by individual tests.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |