General Chemistry Standards Unit 9 Solutions
I.
Name _________________________________
I can describe the dynamic process by which solutes dissolve in solvents, and calculate
concentrations including percent concentration, molarity and parts per million.
A. I can use describe how a polar solvent such as water dissolves an ionic solute (like salt) or polar solute (like
sugar).
B. I can use calculate the percentage by mass of a solute in a solution given the grams of solute and solvent or
by using a solubility graph to determine the grams of solute per 100 grams of water at a given temperature.
C. I can calculate the molarity of a solute in a solvent given the formula and mass of the solute and liters of
solution.
Unit 9 Review
1. Use a model of the water molecule to describe how water would dissolve a solute like potassium iodide.
2. Methanol (CH3OH) is an alcohol that is polar. Why does it dissolve in water? Why doesn’t methane (CH4)
which is not polar dissolve in water? You may use diagrams to explain the process.
General Chemistry Standards Unit 9 Solutions
Name _________________________________
I. I can describe the dynamic process by which solutes dissolve in solvents, and calculate
concentrations including percent concentration, molarity and parts per million.
A. I can use describe how a polar solvent such as water dissolves an ionic solute (like salt) or polar solute (like
sugar).
B. I can use calculate the percentage by mass of a solute in a solution given the grams of solute and solvent or
by using a solubility graph to determine the grams of solute per 100 grams of water at a given temperature.
C. I can calculate the molarity of a solute in a solvent given the formula and mass of the solute and liters of
solution.
Unit 9 Review
1. Use a model of the water molecule to describe how water would dissolve a solute like potassium iodide.
2. Methanol (CH3OH) is an alcohol that is polar. Why does it dissolve in water? Why doesn’t methane (CH4)
which is not polar dissolve in water? You may use diagrams to explain the process.
3. Calculate the mass percentage of salt in water which has a solubility of 35.0 grams in 100.0 grams of water.
4. Calculate the Molarity of 47.9 grams of Copper (II) Sulfate (CuSO4) dissolved in 100.0 ml of water.
5. What is the mass percentage of ammonium chloride if 35.0 grams dissolve in 50.0 grams of water at 90o C?
6. If 26.7 grams of aluminum chloride (AlCl3) are dissolved into 500 ml of solution, what is the molarity?
7. Why does the solubility of a gas in a water solution go down (like CO2 in pop) when the solution is heated?
3. Calculate the mass percentage of salt in water which has a solubility of 35.0 grams in 100.0 grams of water.
4. Calculate the Molarity of 47.9 grams of Copper (II) Sulfate (CuSO4) dissolved in 100.0 ml of water.
5. What is the mass percentage of ammonium chloride if 35.0 grams dissolve in 50.0 grams of water at 90o C?
6. If 26.7 grams of aluminum chloride (AlCl3) are dissolved into 500 ml of solution, what is the molarity?
7. Why does the solubility of a gas in a water solution go down (like CO2 in pop) when the solution is heated?