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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
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. 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
Changing the Solubilty of a Salt energy + AgCl(s)⇄ Ag+ + Cl-
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.
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.
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.
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.
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.
Changing the Solubility of a Salt energy + AgCl(s)⇄ Ag+ + Cl- Substance Added Effect on Molar Solubility Effect on Ksp AgNO3
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
Changing the Solubility of a Salt energy + AgCl(s)⇄ Ag+ + Cl- Substance Added Effect on Molar Solubility Effect on Ksp AgNO3Decrease none NaCl
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
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
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
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
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
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
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.
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
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
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
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
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
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
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
Changing the Solubility of a Salt Ca(OH)2(s)⇄ Ca2+ + 2OH- Substance Added Effect on Molar Solubility Effect on Ksp Ca(NO3)2
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
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
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
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
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
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
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
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
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