Name:______

Molarity & Dilutions

For the first page use molarity equation: M = mol / L

1.  What would be the molarity of a solution that had 2 mol of KCl dissolved in 2 liters of water?

2.  What would be the molarity of a solution that had 6 mol of NaCl dissolved in 3 liters of water?

3.  What would be the molarity of a solution that had 74g of KCl dissolved in 2 liters of water?

4.  What would be the molarity of a solution that had 26g of LiF dissolved in 3 liters of water?

5.  What would be the molarity of a solution that had 74g of KCl dissolved in 5 liters of water?

6.  How many grams of LiCl would you need to make a 4 molar solution if you had 1 liter of water?

7.  How many liters of water would you need to make a 3 molar solution if you had 148g of NaCl?

8.  How many liters of water would you need to make a 4 molar solution if you had 200g of CaCl2?

9.  How many grams of BaO would you need to make a 4 molar solution if you had 1.7 liters of water?

10.  How many moles of LiCl would you need to make a 2 molar solution if you had 8.5 liters of water?

11.  How many moles of MgO would you need to make a 1.7 molar solution if you had 3.5 liters of water?

For this page use the dilution equation: M1 X V1 = M2 X V2

12.  If you had 1.0 L of a 4 molar solution and wanted to dilute it to a 1 molar solution you would need how many liters of water total?

13.  If you had 1.0 L of a 2.7 molar solution and wanted to dilute it to a 1.5 molar solution you would need how many liters of water total?

14.  Suppose you took 1 liter of a 10 molar solution and poured 4 liters of water into it. What would be the molarity of the new solution?

15.  What would be the concentration of a solution if you took 2 liters of a 7 molar solution and poured 4 liters of water into it?

16.  What would be the new molarity of a 4 molar solution that had 2 liters of water poured into it?

17.  What would be the new molarity of a 1.5 molar solution that had 3.5 liters of water poured into it?

18.  Suppose you have 1 liter of 12 molar sulfuric acid. This concentration will destroy your skin cells so you want to dilute it to a much safer 2 molar solution. How many liters of water would be in the container after the dilution?

19.  How many liters of water did you have to add for # 18?