1. Unit 12: Solutions
NO2 ⇄ N2O4

2. A. Solution Formation Solution - homogeneous mixture
Solute - substance being dissolved
Solvent –
dissolving medium (dissolver)
(present in greatest amount)

3. A. Solution Formation Types of Solutions: Solute Solvent Example Gas
Air (O2 & CO2 in Nitrogen)
Liquid
Water in Air
Soda
Vinegar (acetic acid in water)
Solid
Salt in water
Stainless Steel (Cr & Ni in Iron)

4. Why does stuff dissolve?
IMAFs between solute–solute
solvent–solvent
must break
Greater solubility:
IMAFs between
solute–solvent
must form
stronger IMAFs solute–solvent

5. A. Solution Formation Electrolyte: forms ions to conduct in solution- +
salt
NaCl - +
sugar
C12H22O11
Strong Electrolyte
Non-Electrolyte
ALL ions
from
ionic compounds
ALL molecules
from
molecular compounds

6. Solubility in 100 g of Water at 20oC
B. Solubility
Solubility
maximum mass of solute that will dissolve in a given amount of solvent at a given temperature
Solubility in 100 g of Water at 20oC
Compound
Solubility (g)
Table Salt
(NaCl)
36.0 g
Baking Soda (NaHCO3)
9.6 g
Table Sugar
(C12H22O11)
203.9 g
(0.62 mol)
(0.11 mol)
(0.59 mol)

7. less solute than max dissolved more than max solute dissolved
B. Solubility
UNSATURATED
less solute than max dissolved
SATURATED
max solute dissolved
SUPERSATURATED
more than max solute dissolved
concentration

8. less solute than max dissolved more than max solute dissolved
B. Solubility
UNSATURATED
less solute than max dissolved
SATURATED
max solute dissolved
SUPERSATURATED
more than max solute dissolved
concentration

9. less solute than max dissolved more than max solute dissolved
B. Solubility
UNSATURATED
less solute than max dissolved
SATURATED
max solute dissolved
SUPERSATURATED
more than max solute dissolved
concentration

10. less solute than max dissolved more than max solute dissolved
B. Solubility
UNSATURATED
less solute than max dissolved
SATURATED
max solute dissolved
SUPERSATURATED
more than max solute dissolved
concentration

11. WS Solutions & Solubility
Quick Quiz!
1) Compounds that partially dissociate (or ionize) into solutions of ions and molecules that partially conduct are …
A) non-electrolytes
B) weak electrolytes
C) strong electrolytes
D) gatorade
WS Solutions & Solubility
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