Solutions Quiz 2

10 Questions | Total Attempts: 166
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Solutions Quizzes & Trivia

Chemical reactions are part and parcel of chemistry. Do you think that you know every little intricate detail? Take the quiz below and find out how much you really know about the subject.

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Questions and Answers
  • 1. 
    A solution of hydrogen peroxide is 30.0% H2O2 by mass and has a density of 1.11 g/cm3.  The MOLARITY of the solution is:
    • A. 

      7.94 M

    • B. 

      8.82 M

    • C. 

      9.79 M

    • D. 

      0.980 M

    • E. 

      None of these

  • 2. 
    A solution containing 292.0 g of Mg(NO3)2 in 880 g of H2O has a density of 1.108 g/mL.  The MOLARITY of the solution is:
    • A. 

      1.86 M

    • B. 

      2.08 M

    • C. 

      2.37 M

    • D. 

      0.332 M

    • E. 

      None of these

  • 3. 
    In a 0.1 molar solution of NaCl in water, which one of the following will be closest to 0.1?
    • A. 

      The mole fraction of NaCl

    • B. 

      The mass fraction of NaCl

    • C. 

      The mass percent of NaCl

    • D. 

      The molality of NaCl

    • E. 

      All of these are about 0.1

  • 4. 
    Calculate the MOLALITY of C2H5OH in water solution which is prepared by mixing 50.0 mL of C5H2OH with 100.0 mL of H2O at 20oC.  The density of the C2H5OH is 0.789 g/mL at 20oC.
    Discuss
    • A. 

      0.086 m

    • B. 

      0.094 m

    • C. 

      1.24 m

    • D. 

      8.56 m

    • E. 

      None of these

  • 5. 
    What is the MOLALITY of a solution of 50.0 g of propanol (molar mass = 60.1 g/mol) in 152 mL water, if the density of water is 1.0 g/mL?
    • A. 

      5.47 m

    • B. 

      0.00547 m

    • C. 

      0.833 m

    • D. 

      0.183 m

    • E. 

      None of these

  • 6. 
    A solution containing 296.6 g of Mg(NO3)2 per liter has a density of 1.114 g/mL.  The MOLARITY of the solution is:
    • A. 

      2.000 M

    • B. 

      2.446 M

    • C. 

      6.001 M

    • D. 

      1.805 M

    • E. 

      None of these

  • 7. 
    A solution containing 292 g of Mg(NO3)2 per liter has a density of 1.108 g/mL.  The MOLALITY of the solution is:
    • A. 

      2.00 m

    • B. 

      2.41 m

    • C. 

      5.50 m

    • D. 

      6.39 m

    • E. 

      None of these

  • 8. 
    Calculate the MOLALITY  of C2H5OH in a water solution which is prepared by mixing 100.0 mL of C2H5OH with 100.0 mL of H2O at 20oC.  The density of the C2H5OH is 0.789 g/mL at 20oC.
    • A. 

      0.082 m

    • B. 

      0.102 m

    • C. 

      1.28 m

    • D. 

      17.1 m

    • E. 

      None of these

  • 9. 
    When 100. mL of 0.125 M HCl is diluted to 250. mL, the resulting MOLARITY of the HCl solution is:
    • A. 

      0.625 M

    • B. 

      0.250 M

    • C. 

      0.0500 M

    • D. 

      0.0250 M

    • E. 

      None of these

  • 10. 
    How many milliliters of 18.4 M H2SO4 are needed to prepare 600 mL of 0.10 M H2SO4?
    • A. 

      1.8 mL

    • B. 

      2.7 mL

    • C. 

      3.3 mL

    • D. 

      4.0 mL

    • E. 

      4.6 mL

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