CHM 1045 Dilutions Practice Problems

Molarity & Dilution Practice Problems

1. Determine the molarity of a solution containing 2.4 mol of KI in 140 mL
total volume of solution
2. What is the concentration of a solution of NaCl if 40 mL of a 2.5 M NaCl
solution is diluted to a total volume of 500 mL?
3. What is the concentration of a solution of KOH if 75 mL of a 2.25 M KOH
solution is diluted to a total volume of 250 mL?
4. Determine the number of moles of NaOH in 500 mL of a 0.6 M NaOH
solution.
5. How many mL of 6.0 M HCl is needed to make 250 mL of a 1.5 M HCl
solution?
6. Determine the molarity of the solution containing 1.5 mol of KNO 3 in 250 mL
total volume of solution.
7. What is the volume of 0.5 M NaI needed to have 0.25 mol NaI?
8. How many mL of 2.0 M CrCl3 is needed to make 400 mL of a 0.25 M CrCl3
solution?
9. How many mL of 4.0 M NaCl is needed to make 50 mL of a 0.5 M NaCl
solution?
10. How many grams of LiOH is needed to make 250 mL of a 0.33 M LiOH
solution?
11. What is the concentration of a solution of CaSO3 if 8.0 mL of a 1.0 M CaSO3
solution is diluted to a total volume of 100 mL?
12. How many grams of Ca(NO2)2 is needed to make 800 mL of a 2.0 M Ca(NO2)2
solution?