Solutions: Concentration – Molarity & ppm
Name: ______________________________________
Period: _______Date: __________________________
Be sure to show the three steps of using a formula: show the formula for the unknown, fill in the formula, show the
answer with correct sig figs and units.
1.
2.
What is the molarity of a solution in which 85.5 g NaCl is dissolved in 1.5 L of water?
What is the molarity of a solution in which 12.0 g AgNO3 is dissolved in 500.0 mL of solution?
3.
How many grams of KNO3 should be used to prepare a 2.50 L of a 0.500 M solution?
4.
To what volume should 7.5 g KCl be diluted in order to prepare a 0.50 M solution?
5.
How many grams of CuSO4 are needed to prepare 250. mL of a 0.200 M solution?
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6.
If 7.65 g of KI are dissolved in sufficient water to make a 4.50 L solution, what is the molarity of the solution?
7.
What is the percent by volume of 5.75 mL of ethyl acetate in 7.85 mL of solution?
8.
A solution is a mixture of 3.0 grams of salt in 475.0 g of water. What is the concentration of the solution in parts
per million, ppm?
9.
A solution of sugar contains 0.45 grams of sucrose, C12H22O11, in 150. g of solution. What is the concentration of
the solution in parts per billion, ppb?
10.
To what volume should a 1.19 mL of an 8.50 M acetic acid solution be diluted in order to make a 1.75 M solution?
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