Unit 6 Quiz--Molarity

Multiple Choice (Choose the best answer.)

  1. 0.450 moles of NaCl are dissolved in 95.0 mL of water. Calculate the molarity of the NaCl solution.

    0.0047 M

    0.21 M

    2.1 M

    4.7 M

    None of these are correct.


  2. How many moles of Ca(NO3)2 are there in 75 mL of 0.25 M solution?.

    0.00333 mol

    0.0188 mol

    3.33 mol

    18.8 mol

    None of these are correct.


  3. 15 g of NaCl occupy a volume of 75 mL. What is the molarity of the solution?

    3.4 M

    0.29 M

    0.019 M

    0.0034 M

    None of these are correct.


  4. 45.0 g of Ca(NO3)2 was used to create a 1.3 M solution. What is the volume of the solution?

    0.21 mL

    210 mL

    360 mL

    4.7 mL

    None of these are correct.


  5. In the reaction, 2 Al (s) + 6 HCl (aq) 2 AlCl3 (aq) + 3 H2 (g), 2.00 g of Al will react with how many milliliters of 0.500 M HCl?

    37.0 mL

    111 mL

    148 mL

    444 mL

    None of these are correct.


  6. In the reaction given in problem 5, 80.0 mL of 2.0 M HCl would react with how many grams of aluminum?

    1.44 g

    4.32 g

    1440 g

    2030 g

    None of these are correct.


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