Tests 0.0 / 5 ? ChemistryTesting and analysing substancesIGCSEEdexcel Created by: Maitri JainCreated on: 19-03-20 01:38 Test for Ammonia 1- add Sodium Hydroxide to solid Ammonium Chloride 2- Heat gently 3-Damp red litmus paper should turn blue due to ammonia gas 1 of 16 Test for Chlorine 1- Add HCl to bleach solution 2- bleaches litmus paper (red and then white) 2 of 16 Test for the anion chlorine Add silver nitrate with dilute nitric acid (the acid eliminate any carbonate from forming). Result: WHITE PRECIPITATE 3 of 16 Test for the anion Bromine Add silver nitrate with dilute nitric acid. Result: CREAM PRECIPITATE 4 of 16 Test for the anion Iodine Add silver nitrate with dilute nitric acid. Result: YELLOW PRECIPITATE 5 of 16 Test for sulphate (SO4 2-) Add Hydrochloric acid and then add barium chloride. Result: WHITE PRECIPITATE 6 of 16 Why add acid first when testing for anions Acid eliminates any carbonate from forming 7 of 16 Test for carbonate (CO3 2-) Add nitric acid. Next test for carbo diode (bubble CO2 into limewater, turns cloudy) 8 of 16 Testing for copper (Cu 2+) ions Add sodium hydroxide. Result: BLUE PRECIPITATE 9 of 16 Testing for Fe 2+ ions Add sodium hydroxide. Result: GREEN PRECIPITATE 10 of 16 Testing for Fe 3+ Add sodium hydroxide. Result: BROWN PRECIPITATE 11 of 16 Flame test for lithium Red (crimson) flame 12 of 16 Flame test for sodium yellow flame 13 of 16 Flame test for potassium Lilac flame 14 of 16 Flame test for calcium Bright orange 15 of 16 Flame test for copper green flame 16 of 16
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