Chemistry 2 - Analyzing substances 0.0 / 5 ? ChemistryTesting and analysing substancesIGCSEEdexcel Created by: LsCreated on: 08-05-14 20:19 flame test process Dip wire into hydrochloric acid and then solid, carry out test on roaring flame. 1 of 26 Na+ Orange/yellow 2 of 26 K+ Lilac 3 of 26 Li+ Red/crimson 4 of 26 Ca2+ Brick red 5 of 26 ammonium ions process Add sodium hydroxide to dissolved substance, heat gently whilst holding litmus paper on the mouth of testube. 6 of 26 ammonium ions result turns litmus paper blue, pungent smell, ammonia gas released (alkaline) 7 of 26 ammonium ions equation (NH4)2CO3 + 2NaOH --> 2NH3 + Na2CO3 + 2H2O 8 of 26 metal ions process add sodium hydroxide to dissolved solid 9 of 26 Cu2+ (and ionic equation) Blue ppt Cu2+(aq) + 2OH-(aq) --> Cu(OH)2(s) 10 of 26 Fe2+ (and ionic equation) Green ppt Fe2+(aq) + 2OH-(aq) --> Fe(OH)2(s) 11 of 26 Fe3+ (and ionic equation) Brown/orange ppt Fe3+(aq) + 3OH-(aq) --> Fe(OH)3(s) 12 of 26 halide ions process add silver nitrate to dissolved solid 13 of 26 Cl- (and equation) white ppt AgNO3(aq) + NaCl(aq) --> AgCl(s) + NaNO3(aq) 14 of 26 Br- (and equation) cream ppt AgNO3(aq) + NaBr(aq) --> AgBr(s) + NaNO3(aq) 15 of 26 I- (and equation) yellow ppt AgNO3(aq) + NaI(aq) --> AgI(s) + NaNO3(aq) 16 of 26 sulphate ions process add barium chloride to dissolved solid 17 of 26 sulphate ions result white ppt 18 of 26 sulphate ions equation Na2SO4(aq) + BaCl2(aq) --> BaSO4(s) + 2NaCl(aq) 19 of 26 carbonate ions process and result add hydrochloric acid to solid : effervesces 20 of 26 carbon dioxide test process and result quickly attach delivery tube to allow the gas to bubble through another test tube of lime water : turns milky 21 of 26 carbonate ions equation 2HCl(aq) + Na2CO3 --> CO2(g) + H2O(l) + 2NaCl(aq) 22 of 26 oxygen test process and result add half a spatula of manganese dioxide and 2cm3 depth of hydrogen peroxide : relights a lighted splint 23 of 26 oxygen test equation 2H2O(aq) --> O2(g) + 2H2O(l) 24 of 26 hydrogen test process and result add 2cm3 oh hydrochloric acid to a magnesium ribbon : lighted splint goes out through a squeaky pop 25 of 26 hydrogen test equation Mg(s) + 2HCl(aq) --> MgCl2(aq) + H2(g) 26 of 26
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