CHEMISTRY
DSHS
NAME__________________
PERIOD________
Molarity
Solve the following problems. Round your answer using sig figs. Show work and use
units!
1. What is the molarity of a solution that contains 2.65 moles of NaCl in a total volume
of 600. mL of water?
2. What is the molarity of a solution prepared by dissolving 0.02 moles of ammonia
(NH3) in water to a final volume of 0.100 liter?
3. What volume (in mL) of 0.250 M solution could be made from 0.5 moles of KI ?
4. What volume of 0.250 M K2Cr2O7 solution can be made from 77.6 grams of K2Cr2O7?
5. How many moles of KCl would be dissolved in 750. mL of 1.25 M solution?
6. What is the molarity if 85.0 grams of NaF are dissolved in water to a final volume of
400. mL?
7. Describe in detail how you would prepare 1.00 liters of a 1.50 M solution of calcium
chloride. Assume you have a 1 L volumetric flask.
8. How many grams would you need to prepare 0.500 liters of a 0.750 M solution of
ammonium chloride.
9. How many grams would you need to prepare 2.00 liters of a 1.25 M solution of
calcium nitrate.
Answers: 1. 4.42 M 2. 0.20 M 3. 2000 mL 4. 1.06 M 5. 0.938 mol 6. 5.06 M 7. 166 g of calcium
chloride placed in a 1 L volumetric flask and water added to the 1 liter mark 8. 20.1 g 9. 410. g