Making and Identifying salts 0.0 / 5 ? ChemistryTesting and analysing substancesIGCSECIE Created by: jing.wenCreated on: 01-11-21 11:50 PRECIPITATION TEST Testing for Aluminium (Al3+) a) Aqueous sodium hydroxide (NaOH) b) Aqueous Ammonia (NH3+) a) white precipitate, soluble in excess, gives colourless solution b) white precipitate, insoluble in excess 1 of 28 PRECIPITATION TEST Testing for Ammonium (NH4+) a) Aqueous sodium hydroxide (NaOH) b) Aqueous Ammonia (NH3+) a) Ammonia gas produced on warming - turns damp red litmus paper blue 2 of 28 PRECIPITATION TEST Testing for Calcium (Ca2+) a) Aqueous sodium hydroxide (NaOH) b) Aqueous Ammonia (NH3+) a) white precipitate, insoluble in excess b) no precipitate, or slight white precipitate. 3 of 28 PRECIPITATION TEST Testing for Chromium (III) (Cr3+) a) Aqueous sodium hydroxide (NaOH) b) Aqueous Ammonia (NH3+) a) green precipitate, soluble in excess b) grey-green precipitate, insoluble in excess 4 of 28 PRECIPITATION TEST Testing for Copper (II) (2+) a) Aqueous sodium hydroxide (NaOH) b) Aqueous Ammonia (NH3+) a) light blue precipitate, insoluble in excess b) light blue precipitate, soluble in excess, gives grey-green solution 5 of 28 PRECIPITATION TEST Testing for Iron (II) (Fe2+) a) Aqueous sodium hydroxide (NaOH) b) Aqueous Ammonia (NH3+) a) green precipitate, insoluble in excess b) green precipitate, insoluble in excess 6 of 28 PRECIPITATION TEST Testing for Iron (III) (Fe3+) a) Aqueous sodium hydroxide (NaOH) b) Aqueous Ammonia (NH3+) a) red-brown precipitate, insoluble in excess b) red-brown precipitate, insoluble in excess 7 of 28 PRECIPITATION TEST Testing for Zinc (Zn2+) a) Aqueous sodium hydroxide (NaOH) b) Aqueous Ammonia (NH3+) a) white precipitate, soluble in excess, gives colourless solution b) white precipitate, soluble in excess, gives colourless solution 8 of 28 FLAME TEST Lithium (Li+) Red 9 of 28 FLAME TEST Sodium (Na+) Yellow-orange 10 of 28 FLAME TEST Potassium (K+) Lilac 11 of 28 FLAME TEST Copper (II) (Cu2+) Blue-green 12 of 28 TESTING FOR ANIONS Carbonate (CO3 2-) Test: Test Result: Test: Add dilute acid Test result: Limewater gets cloudy with CO2 Bubbles of gas, effervescence 13 of 28 TESTING FOR ANIONS Chloride (Cl-) Test: Test Result: Test: acidify with dilute nitric acid, add aqueous silver nitrate. Test result: white precipitate 14 of 28 TESTING FOR ANIONS Bromine (Br-) Test: Test Result: Test: acidify with dilute nitric acid, add aqueous silver nitrate. Test result: cream precipitate 15 of 28 TESTING FOR ANIONS Iodide (I-) Test: Test Result: Test: acidify with dilute nitric acid, add aqueous silver nitrate. Test result: yellow precipitate 16 of 28 TESTING FOR ANIONS Nitrate (NO3 -) Test: Test Result: Test: add aqueous sodium hydroxide and add aluminium foil Test result: damp red paper placed turns blue if ammonia gas present 17 of 28 TESTING FOR ANIONS Sulfate (SO4 2-) Test: Test Result: Test: add an equal volume of dilute hydrochloric, acid, then add aqueous barium salts solution (nitrate/chloride) Test result: white precipitate 18 of 28 TESTING FOR ANIONS Sulfite (SO3 2-) Test: Test Result: Test: add dilute HCL and warm. Test result: sulfur dioxide will turn aqueous potassium manganate (VII) solution from purple to colourless 19 of 28 TESTING FOR GAS Ammonia (NH3+) turns damp red litmus paper blue 20 of 28 TESTING FOR GAS Carbon Dioxide (CO2) Turns limewater cloudy/milky 21 of 28 TESTING FOR GAS Chlorine (Cl2) Bleaches damp litmus paper 22 of 28 TESTING FOR GAS Hydrogen (H2) 'Pops' with a lighted splint 23 of 28 TESTING FOR GAS Oxygen (O2) Relights glowing splint 24 of 28 TESTING FOR GAS Sulfur dioxide (SO2) Turns acidified aqueous potassium manganate (VII) from purple to colourless 25 of 28 carbonates and hydroxide (+oxides) salts soluble only in ammonium, sodium and potassium 26 of 28 Chloride, bromide, iodide salts soluble except silver chloride, silver bromide, silver iodide and lead chloride 27 of 28 Sulfate salts soluble, except barium/ calcium/ lead 28 of 28
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