Chapters 13 & 14 Review Sheet: Solutions & Colligative Properties by J1XyExu

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Chapter 15 & 16 Review Sheet: Solutions & Colligative Properties
      1. What are the two types of mixtures? Explain the differences between them.


      2. What is another name for a solution? What are the types of solutions and what are the
         differences?


      3. What is the Tyndall effect?


      4. What is an electrolyte? Why does it conduct electricity?

         What are some examples? What is a non-electrolyte? What are some examples?


      5. What is a solute? What is a solvent? Give an example of a solution and identify the solute
         and solvent.


      6. How can you make a solute dissolve faster? Explain why each of these ways increase the rate
         of solution.

      7. Explain the differences between the following:
            a. dilute and concentrated

            b. saturated and unsaturated

            c. What is supersaturated?

      8. What happens to the solubility of solids or liquids as the temperature rises? How are gases
         different?


      9. What does the expression “like dissolves like” refer to?


      10. What does molarity mean? What does molality mean? What do they both measure?
Calculations
Calculate the molarities of the following solutions:
11)   2.3 moles of sodium chloride in 0.45 liters of solution.


12)      1.2 moles of calcium carbonate in 1.22 liters of solution.


13)      98 grams of sodium hydroxide in 2.2 liters of solution.


14)      1.2 grams of hydrochloric acid in 25 mL of solution.
Explain how you would make the following solutions. You should tell how many grams of the
substance you need to make the solution, not how many moles when necessary(15-17).

15)    2.0 L of 6.0 M HCl



16)    5.0 L of 9.0 M NaOH diluted to 2.0 M NaOH



17)    0.75 L of 0.25 M Na2SO4



18)    How many liters of 3.4 M solution can be made using 78 grams of isopropanol (C3H8O)?



19)    What is the concentration of a solution with a volume of 3.3 mL that contains 12 grams of
       ammonium sulfite?


20)     I add 1.65 L of water to 112 grams of sodium acetate, what is the molality of NaC2H3O2 in this
       solution?


21)    If 75.0 mL of 5.0M nitric acid is diluted to 315 mL, what is the concentration of the new
       solution?



22)    What volume of concentrated 18M H2SO4 is required to prepare 525 mL of a 7.0M solution?



23)    A solution is prepared by mixing 16mL heptane (C7H16, d=0.684 g/cm3) with 62 mL of hexane
       (C6H14, d= 0.66 g/cm3). Assuming that the volumes add on mixing, calculate the mass
       percent, molality, and molarity.




CHEM Review                                                                    Chilton
                                 Calculations – Answer Key
Calculate the molarities of the following solutions:
11)    2.3 moles of sodium chloride in 0.45 liters of solution. 5.1 M NaCl

12)    1.2 moles of calcium carbonate in 1.22 liters of solution. 0.98 M CaCO3

13)    98 grams of sodium hydroxide in 2.2 liters of solution. 1.1 M NaOH

14)    1.2 grams of hydrochloric acid in 25 mL of solution. 1.3 M HCl

Explain how you would make the following solutions.

15)    2.0 L of 6.0 M HCl Dissolve 440 g HCl in water, dilute to a final volume of 2.0 L

16)    5.0 L of 9.0 M NaOH diluted to 2.0 M NaOH Use 5.0L of 9.0 M NaOH and add water to
       dilute to a final volume of 23 L

17)    0.75 L of 0.25 M Na2SO4 Dissolve 27 g Na2SO4 in water, dilute to a final volume of 0.75 L

18)    How many liters of 3.4 M solution can be made using 78 grams of isopropanol (C3H8O)? 0.38
       L solution

19)    What is the concentration of a solution containing 3.3 mL of solvent and 12 grams of
       ammonium sulfite? 31 M (NH4)2SO3

20)     If I add 1.65 L of water to 112 grams of sodium acetate what is the molality of NaC2H3O2 in
       this solution? 0.827 m NaC2H3O2

21)     If 75.0 mL of 5.0M nitric acid is diluted to 315 mL, what is the concentration of the new
       solution?, 1.2 M HNO3


22)    What volume of concentrated 18M H2SO4 is required to prepare 525 mL of a 7.0M solution?,
       0.20L of 18M H2SO4


23)     A solution is prepared by mixing 16mL heptane (C7H16, d=0.684 g/cm3) with 62 mL of hexane
       (C6H14, d= 0.66 g/cm3). Assuming that the volumes add on mixing, calculate the mass
       percent, molality, and molarity. 21% heptane (%(m/m)), 2.7 m, 1.4 M




CHEM Review                                                                    Chilton

								
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