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2 February, 02:21

How do you prepare 500 ml of a 1.77M H2SO4 solution from an 18.0 M H2SO4 stock solution?

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  1. 2 February, 05:04
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    Molarity Problems Worksheet

    M=nV n = # moles

    V must be in liters (change if necessary)

    1. What is the molarity of a 0.30 liter solution containing 0.50 moles of NaCl?

    1.7M

    2. Calculate the molarity of 0.289 moles of FeCl3 dissolved in 120 ml of solution?

    2.41 M

    3. If a 0.075 liter solution contains 0.0877 moles of CuCO4, what is the molarity?

    1.2M

    4. How many moles of NaCl are present in 600. ml a 1.55 M NaCl solution?

    .930 moles

    5. How many moles of H2SO4 are present in 1.63 liters of a 0.954 M solution?

    1.56 molse

    6. How many liters of solution are needed to make a 1.66 M solution containing 2.11 moles of KMnO4?

    1.27 g

    7. What volume of a 0.25 M solution can be made using 0.55 moles of Ca (OH) 2?

    2.2 L

    For all of the problems below you will need to do a mole-mass conversion. Each problem will involve two steps.

    8. What is the molarity in 650. ml of solution containing 63 grams of NaCl?

    1.7 M

    9. How many grams of Ca (OH) 2 are needed to produce 500. ml of 1.66 M Ca (OH) 2 solution?

    61.5 g

    10. What volume of a 0.88 M solution can be made using 130. grams of FeCl2?

    1.2 L

    Dilution Problems Worksheet

    1. How do you prepare a 250.-ml of a 2.35 M HF dilution from a 15.0 M stock solution?

    39.2 mL

    2. If 455-ml of 6.0 M HNO3 is used to make a 2.5 L dilution, what is the molarity of the dilution?

    1.1 M

    3. If 65.5 ml of HCl stock solution is used to make 450.-ml of a 0.675 M HCl dilution, what is the molarity of the stock solution?

    4.64 M

    4. How do you prepare 500.-ml of a 1.77 M H2SO4 dilution from an 18.0 M H2SO4 stock solution?

    Take 49.2-ml of 18.0 M H2SO4 stock solution and pour it into a 500-ml volumetric flask. Fill to the 500-ml line with distilled water to make 1.77M H2SO4 solution.

    Extra Molarity Problems for Practice

    1. How many moles of LiF would be required to produce a 2.5 M solution with a volume of 1.5 L?

    3.75 M

    2. How many moles of Sr (NO3) 2 would be used in the preparation of 2.50 L of a 3.5 M solution?

    8.75 M

    3. What is the molarity of a 500-ml solution containing 249 g of KI?

    3.00 M

    4. How many grams of CaCl2 would be required to produce a 3.5 M solution with a volume of 2.0 L?

    777 g

    Explanation:

    I've done this before
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