Chemistry equations 3.3 0.0 / 5 ? ChemistryThe Periodic TableA2/A-levelWJEC Created by: rhiannxncraxgCreated on: 07-10-21 14:20 Lead Oxide as Amphoteric Compound PbO + 2HNO3 > 2Pb(NO3)2 + H2O PbO + 2NaOH + 2H2) > Na2[Pb(OH)4] 1 of 15 Lead Hydroxide as Amphoteric Compound Pb(OH)2 + 2H+ > 2Pb2+ + H2O Pb(OH)2 + 2OH- > [Pb(OH)4]2- 2 of 15 Aluminum Oxide as amphoteric compound Al2O3 + 6HCl > 2AlCl3 + 3H2O Al2O3 + 2NaOH + 3H2O > 2Na[Al(OH)4] 3 of 15 Aluminum hydroxide as amphoteric compound Al(OH)3 + 3H+ > 2Al3+ + 3H2O Al(OH)3 + OH- > [Al(OH)4]- 4 of 15 Pb2+ equations Pb2+ + 2OH- > Pb(OH)2 Pb2+ + 2I- > PbI2 5 of 15 lead chloride equations PbCl2 + aq <> Pb2+ + 2Cl- Pb2+ + 4Cl- <> PbCl2 6 of 15 Carbon monoxide in metal extraction (iron and copper) Fe2O3 + 3CO > 2Fe + 3CO2 CuO + CO > Cu + CO2 7 of 15 Limewater test CO2 + Ca(OH)2 > CaCO3 + H2O CO3,2- + CO2 + H2O > 2HCO3,- 8 of 15 Carbon dioxide in water CO2 + H2O <> H2CO3 CO2 + H2O <> H+ + HCO3,- 9 of 15 CO2 with NAOH (excess NAOH then excess CO2) CO2 + 2NaOH > Na2CO3 + H2O CO2 + NaOH > NaHCO3 10 of 15 Displacement of group 7 compounds Cl2 + 2Br- > 2Cl- + Br2 Cl2 + 2I- > 2Cl- + I2 Br2 + 2I- > 2Br- + I2 11 of 15 Production of HX gases where X is group 7 NaCl + H2SO4 > HCl + NaHSO4 NaBr + H3PO$ > HBr + NaH2SO4 NaI + H3PO4 > HI + NaH2PO4 12 of 15 Chlorine with water Cl2 + H2) <> Cl- + HOCl 13 of 15 Chlorine with hydroxide at 25 degrees then 80 degrees Cl2 + 2OH- > Cl- + ClO- + H2O 3Cl- + 6OH- > 5Cl- + ClO3,- + 3H2O 14 of 15 Industry preparation of chlorine 4HCl + MnO2 > Cl2 + MnCl2 + H2O 15 of 15
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