Chapter 14 Quiz

chem 20 D. Oliver

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  1. A solution is a _____________   ____________ of two or more substances. Enter your answer as two words separated by a space in lower case.

    2. Your answer:

  2. The solute is the _____________ fractional part of a solution. Enter your answer as a single word in lower case.

    3. Your answer:

  3. In a saturated solution, the solid and aqueous solute are ___   ___________. Enter your answer as two words separated by a space in lower case.

    4. Your answer:

  4. 100x(mL solute)/(mL solution) is called the ___________   __________. Enter your answer as two words separated by a space in lower case.

    5. Your answer:

  5. 300. ml of a 6.00M solution of HCl is added to 500 ml of water. What is the concentration of the resulting solution? Enter your answer to 3 sig. figs. with the proper units.

    6. Your answer:

  6. Heating a saturated solution that contains some solid will cause the solution to become supersaturated.

    7. Your answer:
    True False

  7. Cooling a saturated solution will always cause precipitation.

    8. Your answer:
    True False

  8. Molarity and normality are numerically the same for HNO3.

    9. Your answer:
    True False

  9. A 1.00 m solution of C6H12O6 will lower the freezing point of of water by 1.86ºC and a 1.00 m solution of BaCl2 will lower the freezing point of water by 5.58ºC.


    10. Your answer:
    True False

  10. The boiling point elevation constant, kb, is the same for all solvents, but is different for each solute.


    11. Your answer:
    True False

  11. If 30.0 g of salt is dissolved in 100 g of water, what is the percent by mass?

    12. Your answer:
    23.1% by volume
    30.0% by volume
    30.0% by weight
    76.9% by weight
    23.1% by weight

  12. 30.0 mL of methyl alcohol, 30.0 mL of isopropyl alcohol and 50.0 ml of water are combined. What is the volume percent of methyl alcohol?

    13. Your answer:
    50.0%v/v
    60.0%v/v
    33.3%v/v
    The correct answer is not shown.
    27.3%v/v

  13. A .600 N solution of H2SO4 has what molarity?

    14. Your answer:
    .300 M
    1.20 M
    .600 M
    .200 M
    1.20 m

  14. A .100 m solution of NaCl has a boiling point of _______ at one atm.

    15. Your answer:
    100.05 °C
    101.0 °C
    100.2 °C
    100.1 °C
    100.5 °C

  15. 5.00 g of an unknown molecular compound dissolved in 60.0 g of benzene and the freezing point of the resulting solution is 4.40°C. kf for benzene is 5.12°C/m and the normal freezing point is 5.50°C. The molar mass of the unknown compound is _________.

    16. Your answer:
    125 g/mole
    209 g/mole
    388 g/mole
    428 g/mole
    97.1 g/mole

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