1. Drill: Draw LDDs for:
BF3 NH3
C3H6 C3H7NO

2. Review & Collect Drill & HW

3. Test Thursday or Friday
CHM II
Test Thursday or Friday

4. CHM II HW
Read: PP-18
Complete the attached assignment & turn it in tomorrow.

5. Solutions

6. Solution
Homogeneous mixture made up of at least one solute dissolved in the solvent

7. Solute
Substance being dissolved
Portion in lesser molar amount

8. Solvent Substance doing the dissolving
Portion in greatest molar amount

10. Colloid Slightly larger particles
Light passes & particles stay suspended

11. Suspension
Even larger particles
Particles block or reflect light

12. Tyndall Effect
Because light reflects off suspended particles, the light ray can be seen from the side

13. Size Comparison
Solution < Colloid
Colloid < Suspension

14. Soluble
When one substance (solute) dissolves in another (solvent)

15. Solubility
The max amount of one substance (solute) dissolved in another (solvent)

16. Concentration
The amount of solute dissolved into solution

17. Concentrated Solution
A solution with a relatively large amount of solute dissolved

18. Dilute Solution
A solution with a relatively small amount of solute dissolved

19. Saturated Solution
A solution with the maximum amount of solute dissolved in the solution

20. Unsaturated Solution
A solution with less than the maximum amount of solute dissolved in solution

21. Supersaturated Solution
A solution with greater than the maximum amount of solute dissolved in solution

22. CHM II HW
Review PP-18
Complete the worksheet attached to the Poly Website, & turn it in tomorrow.

23. Drill: Draw LDDs for:
C4H8 HNO3
C4H6

24. Review Drill & HW

25. Solution Chemistry

26. Solution Measures Concentration: % soln Molarity Molality
Mole Fraction

27. Percent Solution
Mass of one portion per the total mass, all times 100 %
%soln = ma/mtotal x 100 %

28. Molarity
Moles of solute per liter of solution
M = molessolute/Lsoln

29. Molality mo = molessolute/kgsolvent
Moles of solute per kilogram of solvent
mo = molessolute/kgsolvent

30. Mole Fraction X = molesa/molessoln
Moles of one portion per total number of moles in the solution
X = molesa/molessoln

31. Calculate the molarity of a 250 mL solution containing 5
Calculate the molarity of a 250 mL solution containing 5.0 g NaOH dissolved in water

32. Calculate the molality of 69 g of C2H5OH dissolved in 500
Calculate the molality of 69 g of C2H5OH dissolved in mL of water

33. Calculate the mole fraction of each portion when 92 g of C2H5OH dissolved in 144 mL of water

34. Calculate the molality & mole fraction of a solution containing 46 g of C2H5OH dissolved in 1782 mL of water

35. Drill:
Calculate the mass of KI required to make 250 mL of M KI.

36. Review Drill Review HW

37. We will have a test on LDDs & Solution Chemistry by the end of this week.

38. CHM II HW
Review PP-18
Complete the attached problem (CP-1) & turn it in tomorrow.

39. Colligative Properties
Properties dependent only on the concentration of particles in solution

40. Examples
Vapor pressure
Boiling & Freezing points
Osmotic pressure

42. Vapor Pressure VPsolution = (VPsolvent)(Xsolvent) X = mole fraction
VP = vapor pressure

43. DT = imoK Boiling & Freezing DT = change in BP or FP
i = ionic activity
K = BP or FP constant

44. Osmotic Pressure p = iMRT p = osmotic pressure i = ionic activity
M = Molarity

45. Calculate the vapor pressure of a solution containing 150 g C5H10O5 in 162 mL of water at 30oC

46. Calculate BP & FP of 60. 0 g of NaOH in 250 mL water KBP = 0
Calculate BP & FP of 60.0 g of NaOH in 250 mL water KBP = 0.512oC/mo KFP = -1.86oC/mo

47. Calculate the osmotic pressure of a solution containing 12 g of NaOH dissolved in 250 mL solution at 27oC

48. Drill:
Calculate the VP of a solution containing 36 % m/m glucose (C6H12O6) in water at 29oC:
(VPwater = 30.0 mm Hg)

49. Review Drill & Check HW

50. CHM II HW
Review PP-18
Test: Thursday

51. Test Review

52. Classify the type of Bonding:
Fe-Cl Fe-Cr
C-Cl H-Br
S-O K-I

53. Classify the type of IM Force:
H2 & Cl2 HF & HF
H2 & HCl HBr & HI
CH4 & C2H6

54. Draw LDDs for:
BH3 NCl3
CF4 C3H6
IF3 CO3-2

55. Calculate the FP & BP of a solution containing 120 g C3H7OH in 250 mL of water at its BP.
KBP = 0.512oC/mo
KFP = -1.86oC/mo

56. Drill: Calculate the molarity of 33
Drill: Calculate the molarity of 33.1 g of Pb(NO3)2 dissolved in 250 mL of solution.

57. Review & Collect Drill & HW

58. CHM II HW Review for the test covering tomorrow.
The test covers Bonding, LDDs, & Solution Chemistry (PP 15 & 18).

59. Draw LDDs for:
PCl3
C3H7NO
NO3-1

60. Calculate the osmotic pressure of a solution containing 12 g of C4H8O4 dissolved in 50.0 mL solution at 27oC

61. Calculate the vapor pressure of a solution containing 12
Calculate the vapor pressure of a solution containing 12.0 g C3H8O in 14.4 mL of water at its BP.
VPsolvent = 120 kPa

62. Calculate the mass of lead(II)nitrate required to make 250 mL of 0
Calculate the mass of lead(II)nitrate required to make 250 mL of 0.40 M Pb(NO3)2

63. Calculate the BP of a solution containing 29
Calculate the BP of a solution containing 29.9 g of CoBr3 dissolved in 75 mL of water.
KBP = oC/mo

64. Calculate the molality of a solution that is 33
Calculate the molality of a solution that is 33.1 % by mass Pb(NO3)2 in water

65. Drill: Calculate the osmotic pressure of 0
Drill: Calculate the osmotic pressure of 0.88 g of CO2 in 750 mL of soln at 27oC

66. 30. 0 g C3H6NF was dissolved in 50. 0 g C6H12O (VP = 20
30.0 g C3H6NF was dissolved in 50.0 g C6H12O (VP = 20.0 kPa) at 27oC making a g/mL solution. Calculate: X, mo, M, p, & VP.

67. 180 g C3H8O was dissolved in 180 mL H2O at 27oC making a 1
180 g C3H8O was dissolved in 180 mL H2O at 27oC making a 1.5 g/mL solution. Calculate X, mo, M, p, VP, BP, & FP.

68. A 1.2 g/cm3 aqueous solution is 20.0 % by mass NaOH at 27oC.
Calculate: X, mo, M, p, & MP

69. Calculate the molecular mass of a covalent compound dissolved in an aqueous solution to make it 25 % by mass when it boils at oC