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Double Replacement 1. Hydrogen sulfide is bubbled through a solution of silver nitrate.

Double Replacement 1. Hydrogen sulfide is bubbled through a solution of silver nitrate. H 2 S(g) + 2 AgNO 3 (aq)  2 HNO 3 (aq) + Ag 2 S(s) H 2 S + 2 Ag + + 2 NO 3 -  2 H + + 2 NO 3 - + Ag 2 S H 2 S + 2 Ag +  2 H + + Ag 2 S.

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Double Replacement 1. Hydrogen sulfide is bubbled through a solution of silver nitrate.

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  1. Double Replacement1. Hydrogen sulfide is bubbled through a solution of silver nitrate. H2S(g) + 2AgNO3(aq) 2HNO3(aq) + Ag2S(s) H2S + 2Ag+ + 2NO3-2H+ +2NO3- + Ag2S H2S + 2Ag+2H++Ag2S

  2. 2. An excess of sodium hydroxide solution is added to a solution of magnesium nitrate. 2OH- + Mg2+ Mg(OH)2

  3. 3. Solutions of sodium iodide and lead nitrate are mixed. 2I- + Pb2+  PbI2

  4. 4. A solution of ammonia is added to a solution of ferric chloride. 3NH3(g) + 3H2O(l) + FeCl3(aq) 3NH4Cl(aq) + Fe(OH)3(s) 3NH3 + 3H2O + Fe3+ + 3Cl-3NH4+ + 3Cl- + Fe(OH)3 3NH3 + 3H2O + Fe3+3NH4+ + Fe(OH)3

  5. 5. Solutions of silver nitrate and sodium chromate are mixed. 2Ag+ + CrO42- Ag2CrO4

  6. 6. Excess silver acetate is added to a solution of trisodium phosphate. 3Ag+ + PO43- Ag3PO4

  7. 7. Manganese(II) nitrate solution is mixed with sodium hydroxide solution. Mn2+ + 2OH- Mn(OH)2

  8. 8. A saturated solution of calcium hydroxide is added to a solution of magnesium chloride. Mg2+ + 2OH-  Mg(OH)2

  9. 9. Hydrogen sulfide gas is added to a solution of cadmium nitrate. H2S + Cd2+ CdS + 2H+

  10. 10. Dilute sulfuric acid is added to a solution of barium acetate. 2H+ + SO42- + Ba2+ + 2C2H3O2-  BaSO4 + 2HC2H3O2

  11. 11. A precipitate is formed when solutions of trisodium phosphate and calcium chloride are mixed. 2PO43- + 3Ca2+Ca3(PO4)2

  12. 12. A solution of copper(II) sulfate is added to a solution of barium hydroxide. Cu2+ + SO42- + Ba2+ + 2OH- Cu(OH)2 + BaSO4

  13. 13. Equal volumes of dilute equimolar solutions of sodium carbonate and hydrochloric acid are mixed. Na2CO3(aq) + HCl(aq)  NaCl(aq) + NaHCO3(aq) 2Na+ + CO32- + H+ +Cl-Na+ + Cl- + Na+ + HCO3- H+ + CO32- HCO3-

  14. 14. Solid barium peroxide is added to cold dilute sulfuric acid. BaO2(s) + H2SO4(aq)  BaSO4(s) + H2O2(l) BaO2 +2H+ + SO42- BaSO4 + H2O2

  15. 15. Excess hydrochloric acid solution is added to a solution of potassium sulfite. 2HCl(aq) + K2SO3(aq)  H2O(l) + SO2(g) + 2KCl(aq) 2H+ + 2Cl- + 2K+ + SO32- H2O + SO2 + 2K+ + 2Cl- 2H+ + SO32- H2O + SO2

  16. 16. Dilute sulfuric acid is added to a solution of barium chloride. H2SO4(aq) + BaCl2(aq) 2HCl(aq) + BaSO4(s) 2H+ + SO42- + Ba2+ + 2Cl-2H+ + 2Cl- + BaSO4 SO42- + Ba2+ BaSO4

  17. 17. A solution of sodium hydroxide is added to a solution of ammonium chloride. NaOH(aq) + NH4Cl(aq)  NaCl(aq) + NH3(g) + H2O(l) Na+ + OH- + NH4+ + Cl- Na+ + Cl- + NH3 + H2O NH4+ + OH- NH3 + H2O

  18. 18. Dilute hydrochloric acid is added to a solution of potassium carbonate. 2HCl(aq) + K2CO3(aq)  H2O(l) + CO2(g) + 2KCl(aq) 2H+ + 2Cl- + 2K+ + CO32-H2O + CO2 + 2K+ + 2Cl- 2H+ + CO32- H2O + CO2

  19. 19. Gaseous hydrogen sulfide is bubbled through a solution of nickel(II) nitrate. H2S(g) + Ni(NO3)2(aq) 2HNO3(aq) + NiS(s) H2S + Ni2+ + 2NO3-2H+ + 2NO3- + NiS H2S + Ni2+ NiS + 2H+

  20. 20. A solution of sodium sulfide is added to a solution of zinc nitrate. Na2S(aq) + Zn(NO3)2(aq) 2NaNO3(aq) + ZnS(s) 2Na+ + S2- + Zn2+ + 2NO3- 2Na+ + 2NO3- + ZnS S2-+ Zn2+ ZnS Better: HS- + OH- + Zn2+ ZnS + H2O

  21. 21. Concentrated hydrochloric acid is added to solid manganese(II) sulfide. 2H+ + MnS  H2S + Mn2+

  22. 22. Solutions of tri-potassium phosphate and zinc nitrate are mixed. 2PO43- + 3Zn2+ Zn3(PO4)2

  23. 23. Dilute acetic acid solution is added to solid magnesium carbonate. 2HC2H3O2 + MgCO3  H2O + CO2 + Mg2+ + 2C2H3O2-

  24. 24. Gaseous hydrofluoric acid reacts with solid silicon dioxide. 4HF + SiO22H2O + SiF4

  25. 25. Equimolar amounts of trisodium phosphate and hydrogen chloride, both in solution, are mixed. PO43- + H+ HPO42-

  26. 26. Ammonium chloride crystals are added to a solution of sodium hydroxide. NH4Cl + OH- NH3 + H2O + Cl-

  27. 27. Hydrogen sulfide gas is bubbled through a solution of lead(II) nitrate. H2S + Pb2+ PbS + 2H+

  28. 28. Solutions of silver nitrate and sodium chromate are mixed. 2Ag+ + CrO42- Ag2CrO4

  29. 29. Solutions of sodium fluoride and dilute hydrochloric acid are mixed. F- + H+ HF

  30. 30. A saturated solution of barium hydroxide is mixed with a solution of iron(III) sulfate. 3Ba2+ + 6OH- + 2Fe3+ + 3SO42-3BaSO4 + 2Fe(OH)3

  31. 31. A solution of ammonium sulfate is added to a potassium hydroxide solution. NH4+ + OH- NH3 + H2O

  32. 32. A solution of ammonium sulfate is added to a saturated solution of barium hydroxide. 2NH4+ + SO42- + Ba2+ +2OH-2NH3 + 2H2O + BaSO4

  33. 33. Dilute sulfuric acid is added to solid calcium fluoride. 2H+ + SO42- + CaF2 CaSO4 + 2HF

  34. 34. Dilute hydrochloric acid is added to a dilute solution of mercury(I) nitrate. 2Cl- + Hg22+ Hg2Cl2

  35. 35. Dilute sulfuric acid is added to a solution of lithium hydrogen carbonate. H+ + HCO3-  H2O + CO2

  36. 36. Dilute hydrochloric acid is added to a solution of potassium sulfite. 2H+ + SO32- H2O + SO2

  37. 37. Carbon dioxide gas is bubbled through water containing a suspension of calcium carbonate. CO2 + CaCO3 + H2O 2HCO3- + Ca2+

  38. 38. Excess concentrated sulfuric acid is added to solid calcium phosphate. 3H2SO4 + Ca3(PO4)2 2H3PO4 + 3CaSO4(or 3Ca2+ + 3SO42-)

  39. 39. Hydrogen sulfide gas is bubbled into a solution of mercury(II) chloride. H2S + Hg2+ HgS + 2H+

  40. 40. Solutions of zinc sulfate and sodium phosphate are mixed. 3Zn2+ + 2PO43- Zn3(PO4)2

  41. 41. Solutions of silver nitrate and lithium bromide are mixed. Ag+ + Br- AgBr

  42. 42. Solutions of manganese(II) sulfate and ammonium sulfide are mixed. Mn2+ + S2- MnS or better: Mn2+ + HS- + OH- MnS + H2O

  43. 43. Excess hydrochloric acid solution is added to a solution of potassium sulfite. 2H+ + SO32- H2O + SO2 (or H2SO3)

  44. SingleReplacement1. A piece of aluminum metal is added to a solution of silver nitrate. Al(s) + 3AgNO3(aq)  Al(NO3)3(aq) + 3Ag(s) Al + 3Ag+ + 3NO3-Al3+ + 3NO3- + 3Ag Al + 3Ag+ Al3+ + 3Ag

  45. 2. Aluminum metal is added to a solution of copper(II) chloride. 2Al(s) + 3CuCl2(aq) 3Cu(s) + 2AlCl3(aq) 2Al + 3Cu2+ + 6Cl-3Cu + 2Al3+ + 6Cl- 2Al + 3Cu2+2Al3+ + 3Cu

  46. 3. Hydrogen gas is passed over hot copper(II) oxide. H2 + CuO  H2O + Cu

  47. 4. Small chunks of solid sodium are added to water. 2Na + 2H2O 2Na+ + 2OH- + H2

  48. 5. Calcium metal is added to a dilute solution of hydrochloric acid. Ca + 2H+ Ca2+ + H2

  49. 6. Magnesium turnings are added to a solution of iron(III) chloride. 3Mg + 2Fe3+3Mg2+ + 2Fe

  50. 7. Chlorine gas is bubbled into a solution of sodium bromide. Cl2 + 2Br-2Cl- + Br2

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