Name __________________________________________ Date
Name __________________________________________ Date __________________
Solution Composition
1. What is the solubility of NaCl at 25oC?
2. What is the solubility of KNO3 at 70oC?
3. At what temperature is the solubility of KNO3 20g/100cm3 H2O?
4. At what temperature is the solubility of NaNO3 90g/100cm3 H2O?
5. How many grams of KClO3 dissolves in 50 cm3 H2O at 30oC?
6. How many grams of KNO3 dissolves in 200 cm3 H2O at 50oC?
7. If a saturated solution of KNO3 at 20oC is heated to 50oC, how many more grams of KNO3 can dissolve?
8. If a saturated solution of NH4Cl at 80oC is cooled to 30oC, how much solute will precipitate?
9. What is the molarity of a solution of NaNO3 if 25.0 g are dissolved in 500mL?
10. How many grams of KNO3 will be dissolved in 250 mL of a 0.50M solution?
11. What is the nitrate ion concentration if 22.50 g of calcium nitrate are dissolved in 250 ml of solution?
4
12. How many grams of H3PO4 were dissolved in 400.0 ml of solution if the final hydrogen ion concentration is 0.40 M?
13. What is the molality of a solution in which 3.0 moles of NaCl is dissolved in 1.5
Kg of water?
14. How many grams of I2 should be added to 750 g of CCl4 to prepare 0.020 m solution?
15. How much water should be added to 5.00 g of KCl to prepare a 0.500 m solution?
16. 45.6 g barium fluoride dissolves in 250 ml of water. Calculate the mass percent concentration
Here are some combination questions:
17. A solution is prepared by dissolving 50.0 g of cesium chloride in 50.0 g water. The volume of the solution is 63.3 mL. Calculate the molarity, molality, and mole fraction of the solution.
18. An aqueous antifreeze solution is 40.0 % enthylene glycol (C2H6O2) by mass. The density is 1.05 g/mL. Calculate the molarity, molality and mole fraction of the solution.
19. Common commercial sulfuric acid is 95% by mass. The density is 1.84 g/mL. Calculate the molarity, molality and mole fraction for the solution. How much of this solution is needed to prepare 250 mL of a 6.0 M solution?
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