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Chemistry Molarity Exercises

1) This document provides a practice worksheet on calculating molarity with 10 problems. Molarity is defined as moles of solute per liter of solution. 2) A dilute solution means there is a relatively small amount of solute dissolved in a relatively large amount of solvent. 3) A concentrated solution means there is a relatively large amount of solute dissolved in a relatively small amount of solvent.

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144 views1 page

Chemistry Molarity Exercises

1) This document provides a practice worksheet on calculating molarity with 10 problems. Molarity is defined as moles of solute per liter of solution. 2) A dilute solution means there is a relatively small amount of solute dissolved in a relatively large amount of solvent. 3) A concentrated solution means there is a relatively large amount of solute dissolved in a relatively small amount of solvent.

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Copyright
© © All Rights Reserved
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Name: _____________________________________ Period: ______ Date: ___________________

Molarity Practice #2

Complete the following calculations using the molarity equations


(M=mol/L). Show all work and units to receive full credit.
L = mL ÷ 1000
1) What is molarity? 3 mL = L X 1000

2) If a solution is said to be “dilute”, what does that mean in terms of the amount of solute and solvent?

3) If a solution is said to be “concentrated”, what does that mean in terms of the amount of solute and solvent?

4) Calculate the molarity when 2.25 grams of sodium chloride (NaCl) is dissolved to make 0.05 liters of solution.

5) Calculate the number moles in 2.89 L of a 3.6 molar (M) magnesium chloride (MgCl2) solution. How many grams?

6) Calculate the molarity when 6.4 moles of lithium chloride (LiCl) is dissolved to make 1.9 liters of solution.

7) How many liters are required to make a 0.50 molar (M) solution of AlCl3 with 8.3 moles of AlCl3?

8) Calculate the molarity when 4.5 grams of lithium sulfate (Li2SO4) are dissolved to make 250 L of solution.

9) Calculate the molarity when 12.3 grams of Pb(C2H3O2)4 are dissolved to make 3500 mL of solution.

10) Calculate the molarity when 6.2 grams of aluminium hydroxide [Al(OH)3] are dissolved to make 4.7 L of solution.

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