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Solubility Lesson 7 Changing solubility

Solubility Lesson 7 Changing solubility. When to and When not to Multiply the Molarity 1. The molar solubility of Ba(OH) 2 is 2. Equal volumes of 0.0010 M Ba(NO 3 ) 2 and 0.0010 M . Ksp = ? 0.0010 M NaOH are mixed . Will a precipitate occur?

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Solubility Lesson 7 Changing solubility

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  1. Solubility Lesson 7 Changing solubility

  2. When to and When not to Multiply the Molarity 1. The molar solubility of Ba(OH)2 is 2. Equal volumes of 0.0010 M Ba(NO3)2 and 0.0010 M. Ksp = ?0.0010 M NaOH are mixed. Will aprecipitateoccur? Ba(OH)2(s)⇌ Ba2+ + 2OH- Ba(OH)2(s)⇌ Ba2+ + 2OH- s s 2s 10.0010 1 0.0010 M 22 0.00050 M 0.00050 M Multiply by 2 becauseofBa(OH)2(s) Do not multiply by 2 because of NaOH Ksp= [Ba2+][OH-]2TIP = [Ba2+][OH-]2 Ksp= [s][2s]2TIP = [0.00050][0.00050]2 Ksp=4s3 Ksp = 4[0.0010]3 TIP = 1.25 x 10-10 Ksp = 4.0 x 10-9 TIP < Ksp No ppt.

  3. 3. AgNO3(s) is added to 1.0 L of a solution containing Cl- in order to precipitate out the Cl- as AgCl(s). After the AgCl(s) is filtered out what is the remaining concentration of Cl-? AgCl(s)⇌Ag+ + Cl- s s s Ksp = s2 1.8 x 10-10 = s2 s = [Cl-] = 1.3 x 10-5 M

  4. Changing the Solubilty of a Salt energy + AgCl(s)⇄ Ag+ + Cl-

  5. Changing the Solubilty of a Salt energy + AgCl(s)⇄ Ag+ + Cl- The molar solubility is the amount of AgCl(s) in moles per litre that dissolves into ions to form a saturated solution.

  6. Changing the Solubilty of a Salt energy + AgCl(s)⇄ Ag+ + Cl- The molar solubility is the amount of AgCl(s) in moles per litre that dissolves into ions to form a saturated solution. If this equilibrium shifts to the right, the molar solubility increases.

  7. Changing the Solubilty of a Salt energy + AgCl(s)⇄ Ag+ + Cl- The molar solubility is the amount of AgCl(s) in moles per litre that dissolves into ions to form a saturated solution. If this equilibrium shifts to the right, the molar solubility increases. If this equilibrium shifts to the left, the molar solubility decreases.

  8. Changing the Solubilty of a Salt energy + AgCl(s)⇄ Ag+ + Cl- The molar solubility is the amount of AgCl(s) in moles per litre that dissolves into ions to form a saturated solution. If this equilibrium shifts to the right, the molar solubility increases. If this equilibrium shifts to the left, the molar solubility decreases. Like all equilibriums, only changing the temperature changes the Ksp.

  9. Changing the Solubilty of a Salt energy + AgCl(s)⇄ Ag+ + Cl- The molar solubility is the amount of AgCl(s) in moles per litre that dissolves into ions to form a saturated solution. If this equilibrium shifts to the right, the molar solubility increases. If this equilibrium shifts to the left, the molar solubility decreases. Like all equilibriums, only changing the temperature changes the Ksp. Most solid equilibriums are endothermic.

  10. Changing the Solubility of a Salt energy + AgCl(s)⇄ Ag+ + Cl- Substance Added Effect on Molar Solubility Effect on Ksp AgNO3

  11. Changing the Solubility of a Salt energy + AgCl(s)⇄ Ag+ + Cl- Substance Added Effect on Molar Solubility Effect on Ksp AgNO3 Increases the [Ag+] and shifts the equilibrium left

  12. Changing the Solubility of a Salt energy + AgCl(s)⇄ Ag+ + Cl- Substance Added Effect on Molar Solubility Effect on Ksp AgNO3Decrease none NaCl

  13. Changing the Solubility of a Salt energy + AgCl(s)⇄ Ag+ + Cl- Substance Added Effect on Molar Solubility Effect on Ksp AgNO3Decrease none NaCl Increases the [Cl-] and shifts the equilibrium left

  14. Changing the Solubility of a Salt energy + AgCl(s)⇄ Ag+ + Cl- Substance Added Effect on Molar Solubility Effect on Ksp AgNO3Decrease none NaCl Decrease none Na2S Increases the [Cl-] and shifts the equilibrium left

  15. Changing the Solubility of a Salt energy + AgCl(s)⇄ Ag+ + Cl- Substance Added Effect on Molar Solubility Effect on Ksp AgNO3Decrease none NaCl Decrease none Na2S S2- is low solubility with Ag+ so they react and [Ag+] decreases

  16. Changing the Solubility of a Salt energy + AgCl(s)⇄ Ag+ + Cl- Substance Added Effect on Molar Solubility Effect on Ksp AgNO3Decrease none NaCl Decrease none Na2S Increase none Pb(NO3)2

  17. Changing the Solubility of a Salt energy + AgCl(s)⇄ Ag+ + Cl- Substance Added Effect on Molar Solubility Effect on Ksp AgNO3Decrease none NaCl Decrease none Na2S Increase none Pb(NO3)2 Pb2+ is low solubility with Cl- so they react and [Cl-] decreases

  18. Changing the Solubility of a Salt energy + AgCl(s)⇄ Ag+ + Cl- Substance Added Effect on Molar Solubility Effect on Ksp AgNO3Decrease none NaCl Decrease none Na2S Increase none Pb(NO3)2Increase none H2O

  19. Changing the Solubility of a Salt energy + AgCl(s)⇄ Ag+ + Cl- Substance Added Effect on Molar Solubility Effect on Ksp AgNO3Decrease none NaCl Decrease none Na2S Increase none Pb(NO3)2Increase none H2O The molar solubility is the number moles per litre and therefore does not change when more water is added.

  20. Changing the Solubility of a Salt energy + AgCl(s)⇄ Ag+ + Cl- Substance Added Effect on Molar Solubility Effect on Ksp AgNO3Decrease none NaCl Decrease none Na2S Increase none Pb(NO3)2Increase none H2O none none AgCl

  21. Changing the Solubility of a Salt energy + AgCl(s)⇄ Ag+ + Cl- Substance Added Effect on Molar Solubility Effect on Ksp AgNO3Decrease none NaCl Decrease none Na2S Increase none Pb(NO3)2Increase none H2O none none AgCl AgCl is a solid that the solution is already saturated with and it does not change the solubility

  22. Changing the Solubility of a Salt energy + AgCl(s)⇄ Ag+ + Cl- Substance Added Effect on Molar Solubility Effect on Ksp AgNO3Decrease none NaCl Decrease none Na2S Increase none Pb(NO3)2Increase none H2O none none AgCl none none Increase Temperature

  23. Changing the Solubility of a Salt energy + AgCl(s)⇄ Ag+ + Cl- Substance Added Effect on Molar Solubility Effect on Ksp AgNO3Decrease none NaCl Decrease none Na2S Increase none Pb(NO3)2Increase none H2O none none AgCl none none Increase Temperature Shifts to the right and increases the ksp

  24. Changing the Solubility of a Salt energy + AgCl(s)⇄ Ag+ + Cl- Substance Added Effect on Molar Solubility Effect on Ksp AgNO3Decrease none NaCl Decrease none Na2S Increase none Pb(NO3)2Increase none H2O none none AgCl none none Increase Temperature Increase Increase Decrease Temperature

  25. Changing the Solubility of a Salt energy + AgCl(s)⇄ Ag+ + Cl- Substance Added Effect on Molar Solubility Effect on Ksp AgNO3Decrease none NaCl Decrease none Na2S Increase none Pb(NO3)2Increase none H2O none none AgCl none none Increase Temperature Increase Increase Decrease Temperature

  26. Changing the Solubility of a Salt energy + AgCl(s)⇄ Ag+ + Cl- Substance Added Effect on Molar Solubility Effect on Ksp AgNO3Decrease none NaClDecrease none Na2SIncrease none Pb(NO3)2Increase none H2O none none AgCl none none Increase Temperature Increase Increase Decrease TemperatureDecrease Decrease

  27. Changing the Solubility of a Salt Ca(OH)2(s)⇄ Ca2+ + 2OH- Substance Added Effect on Molar Solubility Effect on Ksp Ca(NO3)2

  28. Changing the Solubility of a Salt Ca(OH)2(s)⇄ Ca2+ + 2OH- Substance Added Effect on Molar Solubility Effect on Ksp Ca(NO3)2Decrease none Na2SO4

  29. Changing the Solubility of a Salt Ca(OH)2(s)⇄ Ca2+ + 2OH- Substance Added Effect on Molar Solubility Effect on Ksp Ca(NO3)2Decrease none Na2SO4

  30. Changing the Solubility of a Salt Ca(OH)2(s)⇄ Ca2+ + 2OH- Substance Added Effect on Molar Solubility Effect on Ksp Ca(NO3)2Decrease none Na2SO4Increase none NaOH

  31. Changing the Solubility of a Salt Ca(OH)2(s)⇄ Ca2+ + 2OH- Substance Added Effect on Molar Solubility Effect on Ksp Ca(NO3)2Decrease none Na2SO4Increase none NaOH Decrease none HCl

  32. Changing the Solubility of a Salt Ca(OH)2(s)⇄ Ca2+ + 2OH- Substance Added Effect on Molar Solubility Effect on Ksp Ca(NO3)2Decrease none Na2SO4Increase none NaOH Decrease none HCl Increase none NaCl

  33. Changing the Solubility of a Salt Ca(OH)2(s)⇄ Ca2+ + 2OH- Substance Added Effect on Molar Solubility Effect on Ksp Ca(NO3)2Decrease none Na2SO4Increase none NaOH Decrease none HCl Increase none NaCl none none Ca(OH)2

  34. Changing the Solubility of a Salt Ca(OH)2(s)⇄ Ca2+ + 2OH- Substance Added Effect on Molar Solubility Effect on Ksp Ca(NO3)2Decrease none Na2SO4Increase none NaOH Decrease none HCl Increase none NaCl none none Ca(OH)2none none Increase Temperature

  35. Changing the Solubility of a Salt Ca(OH)2(s)⇄ Ca2+ + 2OH- Substance Added Effect on Molar Solubility Effect on Ksp Ca(NO3)2Decrease none Na2SO4Increase none NaOH Decrease none HCl Increase none NaCl none none Ca(OH)2none none Increase Temperature Increase Increase Decrease Temperature

  36. Changing the Solubility of a Salt Ca(OH)2(s)⇄ Ca2+ + 2OH- Substance Added Effect on Molar Solubility Effect on Ksp Ca(NO3)2Decrease none Na2SO4Increase none NaOHDecrease none HCl Increase none NaCl none none Ca(OH)2none none Increase Temperature Increase Increase Decrease TemperatureDecrease Decrease

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