1 / 34

Solubility

Solubility. Write the equilibrium expression for AgCl Ag + + Cl -. Solubility. The amount of one substance that will dissolve in another. Precipitation. When dissolved particles join together forming a new phase and exit the solution. Precipitate (ppt).

conor
Download Presentation

Solubility

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. Solubility

  2. Write the equilibrium expression for AgCl Ag+ + Cl-

  3. Solubility • The amount of one substance that will dissolve in another

  4. Precipitation • When dissolved particles join together forming a new phase and exit the solution

  5. Precipitate (ppt) • The new phase that forms and leaves the solution

  6. Ppt Examples • Water vapor combining to form rain • Dissolved ions combining to form a solid

  7. Saturated Solution • When the maximum amount of one substance is dissolved in another

  8. Precipitation • When more than the maximum amount of solute is added to a solution, a ppt will form

  9. Solubility Product MX(s) M+(aq) + X-(aq) Ksp =[M+][X-]

  10. Solubility Product MX2(s) M+2(aq) + 2 X-(aq) Ksp =[M+2][X-]2

  11. Solubility Calculations

  12. Calculate the solubility of BaSO4(s) • Ksp = 1.2 x 10-10

  13. Calculate the solubility of SrCr2O7(s) • Ksp = 2.5 x 10-13

  14. Solubility Product BaSO4(s) Ba+2(aq) + SO4-2(aq) Ksp =[Ba+2][SO4-2]

  15. Calculate the solubility of PbI2(s) • Ksp = 8.0 x 10-9

  16. Calculate the solubility of Mn2S3(s) • Ksp = 1 x 10-98

  17. Solubility Concepts AgI(s) Ag+ + I- Ksp = [Ag+][I-] at Eq. Qsp = [Ag+][I-] init.

  18. Solubility Concepts • If Qsp > Ksp a precipitate will form • If Qsp < Ksp no precipitate will form

  19. Common Ion Effect • Solubility of a solid is reduced when one of its ions is already in solution

  20. 150 mL 0.010 M KI is added to 100 mL 0.010 M Pb(NO3)2. Ksp for PbI2 = 8.0 x 10-9 • Will a ppt form?

  21. Common Ion Solubility Calculations

  22. Calculate the solubility of AgI(s) • Ksp = 1.5 x 10-16

  23. Calculate the solubility of AgI(s) in 0.10 M NaI • Ksp = 1.5 x 10-16

  24. Calculate the solubility of MZ2(s) in • 0.20 M M(NO3)2 Ksp = 2.0 x 10-16

  25. Calculate the solubility of M2Z3(s) in • 0.20 M M(NO3)3 Ksp = 2.0 x 10-16

  26. Aqueous NaI is added (dropwise) to a solution of 0.10 M AgNO3(s) & 0.10 M CuNO3 AgI Ksp = 1.0 x 10-16 CuI Ksp = 5.1 x 10-12

  27. Aqueous KCl is added (dropwise) to a solution of 0.10 M AgNO3(s) & 0.10 M Hg2(NO3)2 • AgCl Ksp = 1.8 x 10-10 • Hg2Cl2 Ksp = 5.1 x 10-12

  28. Review

  29. Calculate the solubility of PbS(s) • Ksp = 1.0 x 10-28

  30. Calculate the solubility of PbCl2(s) • Ksp = 1.6 x 10-5

  31. Calculate the solubility of Sc(OH)3(s) • Ksp = 2.0 x 10-31

  32. Calculate the solubility of AgI(s) in 0.20 M NaI • Ksp = 1.5 x 10-16

  33. The solubility of MX2(s) is 2.0 x 10-5 M. Calculate itsKsp

  34. Aqueous MgCl2 is added (dropwise) to a solution of 0.10 M KOH& 0.10 M K2SO4 • Mg(OH)2 Ksp = 6.0 x 10-6 • MgSO4 Ksp = 5.6 x 10-5

More Related