Molarity = Moles of solute/Liters of Solution abb (M)
Molality = Moles of solute/Kg of Solvent abb (m)
Normality = eqivalent solute/Liters of Solution abb (N)

 
1.  How many moles of ethyl alcohol, C₂H₅OH, are present in 65 ml of a 1.5M solution? (0.098 mol alcohol)

2.  How many liters of a 6.0M solution of acetic acid, CH₃COOH, contain 0.0030 mol acetic acid? ( 5.0 x 10^-4 L soln)

3.  You want 85 g of KOH. How many grams of 3.0 m solution of KOH will provide it? (5.9 x 10² g solution)

4.  If you dissolve 0.70 moles of HCL in enough water to prepare 250 mL of solution, what is the molarity of the solution that you have prepared? (2.8 M)

5.  A solution is prepared by adding 2.0 L of 6.0 M HCl to 500 mL of a 9.0 M HCl solution. What is the molarity of the new solution? (Remember! The volumes are additive.) (6.6M)

6.  What is the molality of a 0.10M solution of ethylene glycol, C₂H₆O₂? The solution=s density is 0.90 g/mL. (0.11m)

7.  Convert the following Molarities to Normalities: 

• 2.5M HCl = ________ N (2.5N)
• 1.4M H₂SO₄ =________ N (2.8N)
• 2.0M PbCl₃ =________ N (6.0N)
• 1.0M NaOH =________ N (1.0N)
• 0.5M Ca(OH)₂ =________ N (1 N)

9.  A solution is made by dissolving 25g of NaCl in enough water to make 1.0 L of solution. Assume the density of the solution is 1.0g/cm3. Calculate the molarity, normality and molality of the solution. (0.43M, 0.43N, 0.44m).

10.  When two solutions react and you have their concentrations expressed in normality, you can write: V_aN_a = V_bN_b . How many liters of a 0.30N solution of KMnO₄ can react with 5.0L of a 0.10 N solution of H₂C₂O₄? (1.7L)

11.  What is the concentration (M) of NaOH if 75.6 ml of NaOH is required to react with 270.0ml of a 0.3M solution of H₂SO4? (2.1M)