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Lab 13 Results

Lab 13 Results. Reactions of Aqueous Ionic Compounds. Pb(NO 3 ) 2. HCl. Na 3 PO 4. KI. White ppt. NVR. NVR. NH 4 OH. NVR. Faint White ppt. Orange ppt. Amber NVP. NVR. FeCl 3. White ppt. Na 2 CO 3. bbls. NVR. NVR. Analysis and Conclusions. Question 1:

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Lab 13 Results

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  1. Lab 13 Results Reactions of Aqueous Ionic Compounds

  2. Pb(NO3)2 HCl Na3PO4 KI White ppt. NVR NVR NH4OH NVR Faint White ppt. Orange ppt. Amber NVP NVR FeCl3 White ppt. Na2CO3 bbls. NVR NVR

  3. Analysis and Conclusions • Question 1: • Identify all reactions that produced a precipitate with: Lead (II) nitrate Pb(NO3)2 (aq)

  4. Pb(NO3)2 HCl Na3PO4 KI White ppt. NH4OH FeCl3 Na2CO3

  5. + NH4OH(aq) Pb(NO3)2(aq) Pb2+ NO3-1 NH4+1 OH-1 -2 NO3-1 What Reacts? NH4+1 Pb2+ OH-1 NO3-1

  6. + NH4OH(aq) Pb(NO3)2(aq) NO3-1 Pb2+ NH4+1 OH-1 No! Both have (+) charges Will the two cations react? repel NH4+1 Pb2+ OH-1 NO3-1

  7. + NH4OH(aq) Pb(NO3)2(aq) NO3-1 Pb2+ NH4+1 OH-1 No! Both have (-) charges Will the two anions react? NH4+1 Pb2+ OH-1 NO3-1 repel

  8. + NH4OH(aq) Pb(NO3)2(aq) NO3-1 Pb2+ NH4+1 OH-1 Opposites Attract (+) (-) Cations Anions Soluble (stays dissolved in H2O) NH4+1 NH4NO3(aq) NO3-1 NH4+1 NO3-1 Insoluble (Falls out of solution) Pb2+ Pb(OH)2(s) OH-1 Turns cloudy white OH-1 Pb2+ OH-1 (White ppt.)

  9. Chemical Equation needs to be balanced. Chemical Equation is now balanced. 2 NH4OH(aq) + Pb(NO3)2(aq) NH4NO3(aq) + Pb(OH)2(s) 2

  10. + FeCl3(aq) FeCl3(aq) Pb(NO3)2(aq) Pb(NO3)2(aq) 2 NO3-1 Pb2+ Fe+3 3 Cl-1 (+) (-) Cations Anions Soluble (stays dissolved in H2O) NO3-1 is always soluble Fe3+ Fe(NO3)3(aq) NO3-1 Fe3+ NO3-1 NO3-1 NO3-1 Insoluble (Falls out of solution) Pb2+ PbCl2(s) Cl-1 Faint White ppt. Cl-1 Pb2+ Cl-1

  11. Chemical Equation needs to be balanced. Chemical Equation is now balanced. 2 FeCl3 (aq) + Pb(NO3)2(aq) Fe(NO3)3 (aq) + PbCl2(s) 3 2 3

  12. + Na2CO3(aq) Na2CO3(aq) Pb(NO3)2(aq) Pb(NO3)2(aq) 2 NO3-1 2 Na+ CO32- Pb2+ (+) (-) Cations Anions Soluble (stays dissolved in H2O) Na+ & NO3-1 are always soluble Na+ NaNO3(aq) NO3-1 Na+ NO3-1 Insoluble (Falls out of solution) Pb2+ PbCO3(s) CO32- White ppt. CO32- Pb2+

  13. Chemical Equation needs to be balanced. Chemical Equation is now balanced. Na2CO3 (aq) + Pb(NO3)2(aq) NaNO3 (aq) + PbCO3(s) 2

  14. + CaCl2(aq) CaCl2(aq) Pb(NO3)2(aq) Pb(NO3)2(aq) 2 NO3-1 Pb2+ Ca2+ 2 Cl-1 (+) (-) Cations Anions Soluble (stays dissolved in H2O) NO3-1 is always soluble Ca2+ Ca(NO3)2(aq) NO3-1 Ca2+ NO3-1 NO3-1 Insoluble (Falls out of solution) Pb2+ PbCl2(s) Cl-1 Faint White ppt. Cl-1 Pb2+ Cl-1

  15. Chemical Equation is balanced as written. CaCl2 (aq) + Pb(NO3)2(aq) Ca(NO3)2 (aq) + PbCl2(s)

  16. + NaOH(aq) Pb(NO3)2(aq) Pb(NO3)2(aq) 2 NO3-1 Pb2+ Na+ OH- (+) (-) Cations Anions Soluble (stays dissolved in H2O) Na+ & NO3-1 are always soluble Na+ NaNO3(aq) NO3-1 Na+ NO3-1 Insoluble (Falls out of solution) Pb2+ Pb(OH)2(s) OH- White ppt. OH- Pb2+ OH-

  17. Chemical Equation needs to be balanced. Chemical Equation is now balanced. 2 NaOH(aq) + Pb(NO3)2(aq) NaNO3(aq) + Pb(OH)2(s) 2

  18. + H2SO4(aq) H2SO4(aq) Pb(NO3)2(aq) Pb(NO3)2(aq) 2 NO3-1 2 H+ SO42- Pb2+ (+) (-) Cations Anions Soluble (stays dissolved in H2O) NO3-1 is always soluble H+ HNO3(aq) NO3-1 H+ NO3-1 Insoluble (Falls out of solution) Pb2+ PbSO4(s) SO42- White ppt. SO42- Pb2+

  19. Chemical Equation needs to be balanced. Chemical Equation is now balanced. H2SO4 (aq) + Pb(NO3)2(aq) HNO3 (aq) + PbSO4(s) 2

  20. + CuSO4(aq) Pb(NO3)2(aq) Pb(NO3)2(aq) Cu2+ SO42- Pb2+ 2 NO3-1 (+) (-) Cations Anions Soluble (stays dissolved in H2O) NO3-1 is always soluble Cu2+ Cu(NO3)2 (aq) NO3-1 Cu2+ NO3-1 NO3-1 Insoluble (Falls out of solution) Pb2+ PbSO4(s) SO42- White ppt. SO42- Pb2+

  21. Chemical Equation needs to be balanced. Chemical Equation balanced as written CuSO4(aq) + Pb(NO3)2(aq) Cu(NO3)2(aq) + PbSO4(s)

  22. + KI(aq) Pb(NO3)2(aq) Pb(NO3)2(aq) 2 NO3-1 Pb2+ K+ I- (+) (-) Cations Anions Soluble (stays dissolved in H2O) K+ & NO3-1 are always soluble K+ KNO3(aq) NO3-1 K+ NO3-1 Insoluble (Falls out of solution) Pb2+ PbI2(s) I- Bright Yellow ppt. I- Pb2+ I-

  23. Chemical Equation needs to be balanced. Chemical Equation is now balanced. 2 KI(aq) + Pb(NO3)2(aq) KNO3(aq) + PbI2(s) 2

  24. + Na3PO4(aq) Na3PO4(aq) Pb(NO3)2(aq) Pb(NO3)2(aq) 3 Na+ PO43- Pb2+ 2 NO3-1 (+) (-) Cations Anions Soluble (stays dissolved in H2O) Na+ & NO3-1 are always soluble Na+ NaNO3(aq) NO3-1 Na+ NO3-1 Insoluble (Falls out of solution) Pb2+ Pb3(PO4)2 (s) PO43- White ppt. PO43- Pb2+ Pb2+ PO43- Pb2+

  25. Chemical Equation needs to be balanced. Chemical Equation is now balanced. 2 Na3PO4(aq) + Pb(NO3)2(aq) NaNO3(aq) + Pb3(PO4)2(s) 3 6

  26. + HCl(aq) Pb(NO3)2(aq) Pb(NO3)2(aq) 2 NO3-1 Pb2+ H+ Cl- (+) (-) Cations Anions Soluble (stays dissolved in H2O) NO3-1 is always soluble H+ HNO3(aq) NO3-1 H+ NO3-1 Insoluble (Falls out of solution) Pb2+ PbCl2(s) Cl- Faint white ppt. Cl- Pb2+ Cl-

  27. Chemical Equation needs to be balanced. Chemical Equation is now balanced. 2 HCl(aq) + Pb(NO3)2(aq) HNO3(aq) + PbCl2(s) 2

  28. Analysis and Conclusions • Question 2: • Identify all reactions that produced a precipitate with the ammonia solution: Ammonium hydroxide NH4OH (aq)

  29. + NH4OH(aq) Pb(NO3)2(aq) Pb(NO3)2(aq) Pb2+ 2 NO3-1 NH4+1 OH-1 (+) (-) Cations Anions NH4+1 & NO3-1 are always soluble Soluble (stays dissolved in H2O) NH4+1 NH4NO3(aq) NO3-1 NH4+1 NO3-1 Insoluble (Falls out of solution) Pb2+ Pb(OH)2(s) OH-1 OH-1 White ppt. Pb2+ OH-1

  30. Chemical Equation needs to be balanced. Chemical Equation is now balanced. 2 NH4OH(aq) + Pb(NO3)2(aq) NH4NO3(aq) + Pb(OH)2(s) 2

  31. + NH4OH(aq) CuSO4(aq) Cu2+ SO42- NH4+1 OH-1 (+) (-) Cations Anions NH4+1 is always soluble Soluble (stays dissolved in H2O) (NH4)2SO4(aq) NH4+1 SO42- NH4+1 SO42- NH4+1 Insoluble (Falls out of solution) Cu2+ Cu(OH)2(s) OH-1 Light Blue ppt. OH-1 Cu2+ OH-1

  32. Chemical Equation needs to be balanced. Chemical Equation is now balanced. 2 NH4OH(aq) + CuSO4(aq) (NH4)2SO4(aq) + Cu(OH)2(s)

  33. + NH4OH(aq) AgNO3(aq) Ag+ NO3-1 NH4+1 OH-1 (+) (-) Cations Anions NH4+1 & NO3-1 are always soluble Soluble (stays dissolved in H2O) NH4NO3(aq) NH4+1 NO3-1 NH4+1 NO3-1 Insoluble (Falls out of solution) AgOH(s) Ag+ OH-1 Tan ppt. OH-1 Ag+

  34. Chemical Equation needs to be balanced. Chemical Equation is now balanced. NH4OH(aq) + AgNO3(aq) NH4NO3(aq) + AgOH(s)

  35. + NH4OH(aq) FeCl3(aq) FeCl3(aq) Fe3+ 3 Cl- NH4+1 OH-1 (+) (-) Cations Anions NH4+1 is always soluble Soluble (stays dissolved in H2O) NH4Cl(aq) NH4+1 Cl- NH4+1 Cl- Fe(OH)3(s) Insoluble (Falls out of solution) Fe3+ OH- OH-1 Faint Orange ppt. Fe3+ OH- OH-

  36. Chemical Equation needs to be balanced. Chemical Equation is now balanced. 3 NH4OH(aq) + FeCl3(aq) NH4Cl(aq) + Fe(OH)3(s) 3

  37. Analysis and Conclusions • Question 3: • Identify all chemical reactions that produced bubbles: Pb(NO3)2 HCl Na3PO4 KI CuSO4 H2SO4 NaOH AgNO3 CaCl2 HNO3

  38. + Na2CO3(aq) Na2CO3(aq) HCl(aq) Cl- 2 Na+ CO32- H+ (+) (-) Cations Anions Soluble (stays dissolved in H2O) Na+ is always soluble Na+ NaCl(aq) Cl- Na+ Cl- H+ CO32- CO32- H+ H+ H2O(l) O2- CO2 CO2 Bubbles Bubbles

  39. Chemical Equation needs to be balanced. Chemical Equation is now balanced. Na2CO3(aq) + HCl(aq) CO2(g) + H2O(l) + NaCl (aq) 2 2 Na+ CO2 CO2 O2- H+ Cl- H2O(l) NaCl

  40. + Na2CO3(aq) Na2CO3(aq) H2SO4(aq) H2SO4(aq) SO42- 2 Na+ CO32- 2 H+ (+) (-) Cations Anions Soluble (stays dissolved in H2O) Na+ is always soluble Na2SO4(aq) Na+ SO42- Na+ SO42- Na+ H+ CO32- CO32- H+ H+ H2O(l) O2- CO2 CO2 Bubbles Bubbles

  41. Chemical Equation is balanced as written. Na2CO3(aq) + H2SO4(aq) CO2(g) + H2O(l) + Na2SO4(aq) Na+ CO2 CO2 O2- H+ SO42- H2O(l) Na2SO4

  42. + Na2CO3(aq) Na2CO3(aq) HNO3(aq) NO3- 2 Na+ CO32- H+ (+) (-) Cations Anions Soluble (stays dissolved in H2O) Na+ is always soluble Na+ NaNO3(aq) NO3- Na+ NO3- H+ CO32- CO32- H+ H+ H2O(l) O2- CO2 CO2 Bubbles Bubbles

  43. Chemical Equation needs to be balanced. Chemical Equation is now balanced. Na2CO3(aq) + HNO3(aq) CO2(g) + H2O(l) + NaNO3(aq) 2 2 Na+ CO2 CO2 O2- H+ NO31- H2O(l) NaNO3

  44. Analysis and Conclusions • Question 4: • What do all the chemical reactions that produced bubbles have in common? • Bubbles happened whenever an ACID was reacted withsodium carbonate, Na2CO3

  45. Analysis and Conclusions • Question 5: • What reactions gave a color change but no precipitate?

  46. PbNO3 HCl Na3PO4 KI NH4OH Amber NVP FeCl3 Na2CO3

  47. The reaction between KI and FeCl3 probably made a complex ion. KI Fe3+ + I-  FeI2+(aq) (Still dissolved) Amber NVP FeCl3

  48. Analysis and Conclusions • Question 6: • Which mixings could you have predicted in advance would not result in a reaction? • Any reaction that had common ions.

  49. PbNO3 HCl Na3PO4 KI NH4OH Both have Cl- FeCl3 Both have Na+ Na2CO3

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