Chemistry: Chapter 16 Solutions

Hr_____ Date_______________
Chemistry: Unit 10 Solutions Test Review
1. In a solution, the substance being dissolved is the ______________________.
2. The most commonly used solvent is ______________________.
3. Ethylene glycol (antifreeze) and water are completely miscible. If you mix 20 mL of ethylene glycol with 10 mL of
water in a beaker, what would you expect to see?
4. A solution of sodium chloride and water is what type of mixture?
5. The most precise description of water and oil would be to say that these two substances are
6. Give several examples of an emulsifying agent?
7. What are the properties of an emulsifying agent? (In other words, what do they do? For what are they used?)
8. A silver colored dental filling is a(n) _________________ and an iodine solution for cuts is a(n)
9. Give two examples of alloys:
10. What are the four factors that affect the rate of dissolution?
11. Some drugs taken by athletes can show up on drug tests many months after the athlete last took them.
These drugs are probably _____________________ and _______________________ .
Use your solubility curve to answer the next five questions:
12. Between 40oC and 60oC, which compound shows the largest increase in solubility?
13. The solubility of which compound is LEAST affected by temperature?
14. The solubility of KNO3 increases by approximately ____________ when the temperature rises from 10oC to 60oC.
15. For 140 g of KI (in 100 g H2O) at 10oC, the solution would be described as being __________________________.
16. Which of the following solutions is unsaturated?
60 g of KCl (in 100 g of water) at 80oC
40 g of NaCl (in 100 g of water) at 90oC
145 g of NaNO3 (in 100 g of water) at 45oC
45 g of NH4Cl (in 100 g of water) at 45oC
17. A solution of HCl is 0.300 M. Determine the mass of HCl needed to make 150 mL of solution.
18. A 2.33 M solution of Na2CO3 contains 87 g of solute. Find the volume of the solution.
19. If 28 g of NaOH are in 1.3 L of solution, find the molarity of the solution.
20. Determine the molarity of the NaHCO3(aq) solution if 300 mL of this solution react with 6 g of H2SO4.
2 NaHCO3(aq) + H2SO4(aq)  Na2SO4(aq) + 2 CO2(g) + 2 H2O(l)
21. Increasing the temperature of a liquid generally causes the solubility of a solid in a liquid to__________________.
22. Decreasing the temperature of a liquid generally causes the solubility of a gas in a liquid to__________________.
23. Substances whose water solutions conduct electricity are called ______________________.
24. Calculate the molarity of a solution made by adding 20.0 g of NaOH to enough water to make 250 mL of solution.
25. Approximately what volume of solution will be obtained when 40 g KNO 3 is used to prepare a 2.0 M solution?
26. If more water is added to a solution, the molarity of the solution ______________________.
27. About what volume of 33.6 M formic acid is needed to make 5.0 L of 2.0 M formic acid (HCOOH)?
28. Benzene, toluene, phenol, and hexane are organic solvents, and therefore contain much of which element?
29. Give an example of a suspension. What makes it a suspesion versus a solution?
30. Concentrated sulfuric acid has a molarity of 18.0 M. About how much water should be added to the concentrate to
make 360 mL of 4.5 M sulfuric acid?
31. Consider the balanced equation: H2SO4 + 2 KOH  K2SO4 + 2 H2O. What volume of a 0.16 M KOH solution
will react completely with 35 L of 0.26 M H2SO4 ?