Name
Date
Period
What are solutions?
Use each term just once to complete the passage.
Immiscible
Liquid
Soluble
Solution
Insoluble
Miscible
Solute
Solvent
Air is a(n)
is the
of oxygen gas dissolved in nitrogen gas. The oxygen in air
, and nitrogen is the
dissolved in a solvent, oxygen gas is a(n)
does not dissolve is
. Because oxygen gas
substance. A substance that
.
solutions are the most
common type of solutions. If one liquid is soluble in another liquid, such as acetic acid in water,
the two liquids are
liquids are
. However, if one liquid is insoluble in another, the
.
The diagram shows the hydration of solid sodium chloride to form an aqueous solution.
Use the diagram to answer the following questions.
Hydration is solvation in which the solvent is water. What is solvation?
Solubility and Concentration
Direction: Use the information in the table to graph the solubility curves for barium hydroxide,
Ba(OH)2; copper (II) sulfate, CuSO4; potassium chloride, KCl; and sodium nitrate NaNO3. Use a
different colored pencil for each compound.
Compound
0oC
1.67
23.10
28.0
73.0
Ba(OH)2
CuSO4
KCl
NaNO3
Solubility in g/ 100g water
Temperature
20oC
60oC
3.89
20.94
32.0
61.8
34.2
45.8
87.6
122.0
100oC
101.40
114.0
56.3
180.0
200
Solubility (g/100g of water)
180
160
140
120
100
80
60
40
20
0
0
20
40
60
80
100
120
Temperature (oC)
Direction: Use the information in the table and your graph to answer the following questions.
1. At about what temperature will 100 g of water dissolve equal amounts of potassium chloride
and barium hydroxide?
2. At about what temperature will 37 g of both copper (II) sulfate and potassium chloride
dissolve in 100 g of water?
3. If 100 g of sodium nitrate are dissolved in 100 g of water at 60oC, is the solution formed
saturated, unsaturated, or supersaturated?
4. If 32 g of copper (II) sulfate are dissolved in 100 g of water at 20oC, is the solution produced
saturated, unsaturated, or supersaturated?
WKS 3: SOLUBLE VS. INSOLUBLE
Write the formula and indicate whether the following compounds are soluble (aq) or insoluble (s)
in water. Use the solubility rules on the back of the periodic table.
Name
1. Cadmium sulfide
2. Tin (II) iodide
3. Strontium sulfide
4. Silver bromide
5. Cesium chloride
6. Potassium chloride
7. Aluminum sulfide
8. Cadmium bromide
9. Zinc iodide
10. Lead (II) chloride
11. Potassium chloride
12. Ammonium carbonate
13. Magnesium hydroxide
14. Sodium phosphate
15. Iron (II) carbonate
16. Barium sulfate
17. Calcium hydroxide
18. Silver iodide
19. Silver nitrate
20. Magnesium nitrite
Formula
Soluble or
Insoluble
ELECTROLYTES
Electrolytes are substances that break up (dissociated or ionize) in water to produce
ions. These ions are capable of conducting an electric current.
Generally, electrolytes consist of acids, bases and salts (ionic compounds).
Nonelectrolytes are usually covalent compounds, with exception of acids.
Classify the following compounds as either an electrolyte or nonelectrolyte.
Compound
1. NaCl
2. CH3OH (methyl alcohol)
3. C3H5(OH)3 (glycerol)
4. HCl
5. C6H12O6 (sugar)
6. NaOH
7. C2H5OH (ethyl alcohol)
8. CH3COOH (acetic acid)
9. NH4OH (NH3 + H2O)
10.
H2SO4
Electrolyte
Nonelectrolyte