Name______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?

o o 14. The solubility of KNO3 increases by approximately ______when the temperature rises from 10 C to 60 C.

o 15. For 140 g of KI (in 100 g H2O) at 10 C, 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 o 145 g of NaNO3 (in 100 g of water) at 45 C o 45 g of NH4Cl (in 100 g of water) at 45 C

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 is used to prepare a 2.0 M solution? 3

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 ?