Drill:

47
Drill: •Determine the KQ/HQ ratio to make a buffer solution with a pH of 4.70 K a for HQ = 3.0 x 10 -5

description

Drill:. Determine the KQ/HQ ratio to make a buffer solution with a pH of 4.70 K a for HQ = 3.0 x 10 -5. Drill: Calculate [H 2 Q], [HQ - ], [Q -2 ], [H + ], & pH of 0.20 M KHQ. Ka 1 = 2.0 x 10 -4 Ka 2 = 8.0 x 10 -9. Solubility. Solubility. - PowerPoint PPT Presentation

Transcript of Drill:

Page 1: Drill:

Drill:•Determine the KQ/HQ ratio to make a buffer solution with a pH of 4.70

•Ka for HQ = 3.0 x 10-5

Page 2: Drill:

Drill: Calculate [H2Q], [HQ-], [Q-2], [H+], & pH of 0.20 M KHQ.

Ka1 = 2.0 x 10-4

Ka2 = 8.0 x 10-9

Page 3: Drill:

Solubility

Page 4: Drill:

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

Page 5: Drill:

Saturated Solution•When the maximum

amount of one substance is dissolved

in another

Page 6: Drill:

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

form

Page 7: Drill:

Precipitation• When dissolved

particles join together forming a new phase and exit the solution

Page 8: Drill:

Precipitate (ppt)•The new phase that

forms and leaves the solution

Page 9: Drill:

Ppt Examples•Water vapor combining to

form rain

•Dissolved ions combining to form a solid

Page 10: Drill:

Write the equilibrium expression for

AgCl(s) Ag+ + Cl-

Page 11: Drill:

Solubility Product

MX(s)

M+(aq) + X-

(aq)

Ksp =[M+][X-]

Page 12: Drill:

Solubility Product

MX2(s)

M+2(aq) + 2 X-

(aq)

Ksp =[M+2][X-]2

Page 13: Drill:

Write the equation & equilibrium expression for:

Al2(SO4)3

Page 14: Drill:

Solubility Calculations

Page 15: Drill:

•Calculate the solubility of

BaSO4(s)

•Ksp = 1.2 x 10-10

Page 16: Drill:

Solubility Product

BaSO4(s)

Ba+2(aq) + SO4

-2(aq)

Ksp =[Ba+2][SO4-2]

Page 17: Drill:

•Calculate the solubility of

SrCr2O7(s)

•Ksp = 2.5 x 10-13

Page 18: Drill:

•Calculate the solubility of

PbI2(s)

•Ksp = 8.0 x 10-9

Page 19: Drill:

•Calculate the solubility of

Mn2S3(s)

•Ksp = 1 x 10-98

Page 20: Drill:

Drill:Write the reaction &

equilibrium expression when solid Fe2(SO4)3 is

added to water.

Page 21: Drill:

Drill: Calculate the solubility of M3X4

Ksp for M3X4

= 6.9 x 10-207

Page 22: Drill:

Solubility Concepts

AgI(s) Ag+ + I-

Ksp = [Ag+][I-] at Eq.

Qsp = [Ag+][I-] init.

Page 23: Drill:

Solubility Concepts•If Qsp > Ksp a

precipitate will form

•If Qsp < Ksp no precipitate will form

Page 24: Drill:

150 mL 0.0010 M KI is added to 100 mL 0.050

M Pb(NO3)2. Ksp for PbI2 = 8.0 x 10-9

•Will a ppt form?

Page 25: Drill:

Calculate the solubility of

AgI(s)

•Ksp = 1.5 x 10-16

Page 26: Drill:

Common Ion Solubility

Calculations

Page 27: Drill:

Common Ion Effect

•Solubility of a solid is reduced when one of its ions is already

in solution

Page 28: Drill:

•Calculate the solubility of AgI(s)

in 0.10 M NaI

•Ksp = 1.5 x 10-16

Page 29: Drill:

•Calculate the solubility of MZ2(s)

in

0.20 M M(NO3)2

Ksp = 2.0 x 10-15

Page 30: Drill:

Drill: 10.0 mL 0.050 M KCl is added to 15 mL 0.075 M Pb(NO3)2. Ksp PbCl2 = 1.7 x 10-5

•Will a ppt form?

Page 31: Drill:

•Calculate the solubility of M2Z3(s)

in

0.20 M M(NO3)3

Ksp = 2.0 x 10-16

Page 32: Drill:

Drill: Calculate the solubility of CaCO3 in water. Ksp = 4.9 x 10-15

Page 33: Drill:

•Calculate the solubility of PbI2(s)

in 0.010 M NaI

•Ksp = 3.2 x 10-8

Page 34: Drill:

The Really Bad Solubility

Problems

Page 35: Drill:

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

Page 36: Drill:

•Aqueous KCl is added (dropwise) to a solution

of 0.10 M AgNO3 & 0.10 M Cu(NO3)2

•AgCl Ksp = 1.8 x 10-10

•CuCl2 Ksp = 5.1 x 10-12

Page 37: Drill:

Drill: Calculate the solubility of

PbS(s)

Ksp = 1.0 x 10-28

Page 38: Drill:

Review

Page 39: Drill:

•Calculate the solubility of

PbCl2(s)

•Ksp = 1.6 x 10-5

Page 40: Drill:

•Calculate the solubility of Sc(OH)3(s)

•Ksp = 2.7 x 10-31

Page 41: Drill:

•Calculate the solubility of

Ca(OH)2.

•Ksp = 4.0 x 10-6

Page 42: Drill:

Calculate the pH of Li2CO3

Ksp = 8.2 x 10-4

Ka1 = 4.4 x 10-7

Ka2 = 4.7 x 10-11

Page 43: Drill:

•Calculate the solubility of AgI(s)

in 0.20 M NaI

•Ksp = 1.5 x 10-16

Page 44: Drill:

The solubility of MX2(s) is

2.0 x 10-5 M.

Calculate its Ksp

Page 45: Drill:

•Aqueous MgCl2 is added (dropwise) to a

solution of 0.20 M KOH & 0.10 M K2SO4

•Mg(OH)2 Ksp = 5.0 x 10-6

•MgSO4 Ksp = 5.6 x 10-5

Page 46: Drill:

10.0 mL 0.050 M KCl is added to 15 mL 0.060 M Pb(NO3)2.

Ksp PbCl2 = 1.7 x 10-5

•Will a ppt form?

Page 47: Drill:

Drill:•The solubility of YF3 is 2.0 x 10-8. Calculate the value of Ksp.