Title: Name
1Name describe each of the 7 crystal structures
2Solutions
3Solution
- Homogeneous mixture made up of at least one
solute dissolved in the solvent
4Solute
- Substance being dissolved
- Portion in lesser molar amount
5Solvent
- Substance doing the dissolving
- Portion in greatest molar amount
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8Colloid
- Slightly larger particles
- Light passes particles stay suspended
9Suspension
- Even larger particles
- Particles block or reflect light
10Tyndall Effect
- Because light reflects off suspended particles,
the light ray can be seen from the side
11Size Comparison
- Solution lt Colloid
- Colloid lt Suspension
12Soluble
- When one substance (solute) dissolves in another
(solvent)
13Solubility
- The amount of one substance (solute) dissolved in
another (solvent)
14ConcentratedSolution
- A solution with a relatively large amount of
solute dissolved
15Concentration
- The amount of solute dissolved into solution
16Dilute Solution
- A solution with a relatively small amount of
solute dissolved
17Saturated Solution
- A solution with the maximum amount of solute
dissolved in the solution
18Unsaturated Solution
- A solution with less than the maximum amount of
solute dissolved in solution
19Supersaturated Solution
- A solution with greater than the maximum amount
of solute dissolved in solution
20Solution Measures
- Concentration
- Molarity
- Molality
- Mole Fraction
21Percent Solution
- Mass of one portion per the total mass, all times
100 - soln ma/mtotal x 100
22Molarity
- Moles of solute per liter of solution
- M molessolute/Lsoln
23Molality
- Moles of solute per kilogram of solvent
- mo molessolute/kgsolvent
24Mole Fraction
- Moles of one portion per total number of moles in
the solution - X molesa/molessoln
25Calculate the molarity of a 250 mL solution
containing 5.0 g NaOH dissolved in water
26Drill Calculate
- mass of NaCl required to make 1.5 L of 2.0 M NaCl
27Calculate the molality of 69 g of C2H5OH
dissolved in 500.0 mL of water
28Calculate the mole fraction of each portion when
92 g of C2H5OH dissolved in 144 mL of water
29Calculate the molality mole fraction of a
solution containing 46 g of C2H5OH dissolved in
1782 mL of water
30Colligative Properties
- Properties dependent only on the concentration of
particles in solution
31Examples
- Vapor pressure
- Boiling Freezing points
- Osmotic pressure
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33Drill
- Calculate the VP of a solution containing 36
glucose (C6H12O6) in water at 29oC - (VPwater 30.0 mm Hg)
34Vapor Pressure
- VPsolution (VPsolvent)(Xsolvent)
- X mole fraction
- VP vapor pressure
35Boiling Freezing
DT imoK DT change in BP or FP i ionic
activity K BP or FP constant
36Osmotic Pressure
p iMRT p osmotic pressure i ionic
activity M Molarity
37Calculate the vapor pressure of a solution
containing 150 g C5H10O5 in 162 mL of water at
30oC
38Calculate BP FP of 60.0 g of NaOH in 250 mL
waterKBP 0.512oC/moKFP -1.86oC/mo
39Calculate the osmotic pressure of a solution
containing 12 g of NaOH dissolved in 250 mL
solution at 27oC
40Calculate the vapor pressure of a solution
containing 120 g C3H7OH in 144 mL of water at its
BP.
41Calculate the osmotic pressure of a solution
containing 12 g of C4H8O4 dissolved in 750 mL
solution at 27oC
42Clausius-Claperon Eq
(T2)(T1) P2 (T2 T1) P1
Hv R ln
43 VPbenzene Temp (oC) 24.5 27 73.5
127Calculate Hv for benzene
44Drill Calculate BP FP of 88 g of CO2 in 750 mL
waterKBP 0.512oC/moKFP -1.86oC/mo
45Calculate the osmotic pressure of a solution
containing 29.9 g of CoBr3 dissolved in 7500 mL
solution at 27oC
46Calculate the vapor pressure of a solution
containing 12.0 g C3H8O in 14.4 mL of water at
its BP.
47180 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.
48Drill Calculate the mass of lead(II)nitrate
required to make 250 mL of 0.40 M Pb(NO3)2
49300 g C3H6NF was dissolved in 500 g C6H12O at
27oC making a 0.800 g/mL solution. Calculate X,
mo, M, p, VP, BP, FP.
50Calculate the molality of a solution that is 33.1
by mass Pb(NO3)2
51A 1.2 g/cm3 aqueous solution is 20.0 by mass
NaOH at 27oC. Calculate X, mo, M, p, MP
52Calculate the molecular mass of a covalent
compound dissolved in an aqueous solution to make
it 25 by mass when it boils at 102.048oC