Chemistry Quiz: Molarity Questions!

18 Questions | Total Attempts: 113

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Chemistry Quizzes & Trivia

Questions and Answers
  • 1. 
    Which ice coffee would you expect to taste the least sweet?
    • A. 

      0.1 M

    • B. 

      2.5 M

    • C. 

      5 M

    • D. 

      4.8 M

  • 2. 
    What are the units for molarity?
    • A. 

      Moles per liter

    • B. 

      Liter per moles

    • C. 

      Moles per gram

    • D. 

      Grams per mole

  • 3. 
    What does 44 M mean?
    • A. 

      44 molarity over liters

    • B. 

      44 moles per 1 liter

    • C. 

      44 molarity per liters

    • D. 

      44 liters per mole

  • 4. 
    As we dilute a solution...
    • A. 

      The volume increases and the molarity (M) increases

    • B. 

      The volume increases and the molarity (M) decreases

    • C. 

      The volume decreases and the molarity (M) increases

    • D. 

      The volume decreases and the molarity (M) decreases

  • 5. 
    What is the dilution equation?
    • A. 

      M1V1 = M2V2

    • B. 

      M1V2 = M2V1

    • C. 

      M1V1 / M2V2

    • D. 

      Moles per liter

  • 6. 
    When you make a dilution, which of these values remains constant?
    • A. 

      The molarity (M)

    • B. 

      The total moles of solute

    • C. 

      The volume (V)

    • D. 

      The concentration

  • 7. 
    15.8 g of KCl is dissolved in 225 mL of water. Calculate the molarity. Don't forget the units M.
  • 8. 
    1.50 g of NaCl is dissolved in 100.0 mL of water. Calculate the concentration. Don't forget the units M.
  • 9. 
    50.0 g of NaCl is dissolved in 200.0 mL of water, calculate the molarity. Don't forget the units M.
    • A. 

      4.31 M

    • B. 

      4.3 M

    • C. 

      4 M

    • D. 

      4.3103 M

  • 10. 
    25.2 g of NaCl is dissolved in 365 mL of water, calculate the molarity. Don't forget the units M.
  • 11. 
    150.0 g of NaCl is dissolved in 0.2500 L of water, calculate the molarity. Don't forget the units M.
  • 12. 
    How many moles of NaCl are in 250.0 mL of a 0.200 M solution. Don't forget the unit moles.
  • 13. 
    55.6 g of NaCl is dissolved in 0.562 L of water, calculate the molarity. Don't forget the units.
  • 14. 
    Calculate the mass of KCl required to prepare 250. mL of 0.250 M solution. Don't forget the units g.
  • 15. 
    Calculate the volume of 0.30 M KCl solution that contains 6.00 g of KCl. Don't forget the L.
  • 16. 
    Calculate the volume of 0.250 M H2SO4 that contains 0.250 g H2SO4.  Don't forget the L.
  • 17. 
    If I add 25 mL of water to 125 mL of a 0.15 M NaOH solution, what will the molarity of the diluted solution be? Don't forget the units M.
  • 18. 
    Compare the number of moles of solute before dilution with the number of moles of solute after dilution.
    • A. 

      Total number of moles in the solution doesn't change but the number of moles per liter changes

    • B. 

      Number of moles don't change before or after dilution

    • C. 

      Total number of moles gets less with dilution

    • D. 

      Total number of moles increases after a dilution

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