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Topic 7: Solutions
13. The Solubility Curve Table G: Relating change in solubility to temperature change
1. Which of these compounds has the greatest change in solubility between 30 C and 50 C?
o
o
1) KNO3 2) KCl 3) NaNO3 4) NaCl
2. The solubility of which compound is least affected by the change in temperature of water?
1) NH3 2) HCl 3) NaNO3 4) NaCl
3. According to Reference Table G, what change will cause the solubility of KNO3(s) to increase?
1) Increase in pressure 3) Increase in temperature
4) Decrease in temperature
2) Decrease in pressure
o o
4. According to Reference Table G, how does a decrease in temperature from 40 C to 20 C affect the
solubility of NH3(g) and that of NH4Cl?
1) The solubility of NH3 increases, and the solubility of NH4Cl increases
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Teacher Preview Copy
2) The solubility of NH3 decreases, and the solubility of NH4Cl increases
3) The solubility of NH3 increases, and the solubility of NH4Cl decreases
4) The solubility of NH3 decreases, and the solubility of NH4Cl decreases
5. Based on Reference Table G, which is true of the solubility of KCl, NaCl, NH3 and NH4Cl at 60 C and
o
o
36 C? o
1) KCl, NaCl and NH4Cl have the same solubility at 60 C
2) KCl, NaCl and NH4Cl have the same solubility at 36 C
o
o
3) KCl, NaCl, and NH3 have the same solubility at 60 C o
4) KCl, NaCl, and NH3 have the same solubility at 36 C
14. Molarity and parts per million concentration: Definitions and facts
1. Molarity is defined as
1) Moles of solute per kilogram of solvent 3) Volume of solvent
2) Moles of solute per liter of solution 4) Mass of a solution
2. Molarity (M) of a solution is equal to the
1) Number of grams of solute 3) Number of grams of solute
Liter of solution Liter of solvent
2) Number of moles of solute 4) Number of moles of solute
Liter of solvent Liter of solution
3. Parts per million concentration of a solution can be as expressed as
1) Grams of solvent 3) Grams of solute
x 1 000 000
x 1 000 000
Grams of solute Grams of solvent
2) Grams of solvent 4) Grams of solute
Grams of solution Grams of solution
x 1 000 000
x 1 000 000
4. Which unit can be used to express solution concentration?
1) J/mol 2) L/mol 3) mol/L 4) mol/s
240 Copyright © 2010 E3 Scholastic Publishing. All Rights Reserved. Survivingchem.com
Topic 7: Solutions
13. The Solubility Curve Table G: Relating change in solubility to temperature change
1. Which of these compounds has the greatest change in solubility between 30 C and 50 C?
o
o
1) KNO3 2) KCl 3) NaNO3 4) NaCl
2. The solubility of which compound is least affected by the change in temperature of water?
1) NH3 2) HCl 3) NaNO3 4) NaCl
3. According to Reference Table G, what change will cause the solubility of KNO3(s) to increase?
1) Increase in pressure 3) Increase in temperature
4) Decrease in temperature
2) Decrease in pressure
o o
4. According to Reference Table G, how does a decrease in temperature from 40 C to 20 C affect the
solubility of NH3(g) and that of NH4Cl?
1) The solubility of NH3 increases, and the solubility of NH4Cl increases
Teacher Preview Copy
Teacher Preview Copy
2) The solubility of NH3 decreases, and the solubility of NH4Cl increases
3) The solubility of NH3 increases, and the solubility of NH4Cl decreases
4) The solubility of NH3 decreases, and the solubility of NH4Cl decreases
5. Based on Reference Table G, which is true of the solubility of KCl, NaCl, NH3 and NH4Cl at 60 C and
o
o
36 C? o
1) KCl, NaCl and NH4Cl have the same solubility at 60 C
2) KCl, NaCl and NH4Cl have the same solubility at 36 C
o
o
3) KCl, NaCl, and NH3 have the same solubility at 60 C o
4) KCl, NaCl, and NH3 have the same solubility at 36 C
14. Molarity and parts per million concentration: Definitions and facts
1. Molarity is defined as
1) Moles of solute per kilogram of solvent 3) Volume of solvent
2) Moles of solute per liter of solution 4) Mass of a solution
2. Molarity (M) of a solution is equal to the
1) Number of grams of solute 3) Number of grams of solute
Liter of solution Liter of solvent
2) Number of moles of solute 4) Number of moles of solute
Liter of solvent Liter of solution
3. Parts per million concentration of a solution can be as expressed as
1) Grams of solvent 3) Grams of solute
x 1 000 000
x 1 000 000
Grams of solute Grams of solvent
2) Grams of solvent 4) Grams of solute
Grams of solution Grams of solution
x 1 000 000
x 1 000 000
4. Which unit can be used to express solution concentration?
1) J/mol 2) L/mol 3) mol/L 4) mol/s
240 Copyright © 2010 E3 Scholastic Publishing. All Rights Reserved. Survivingchem.com
