Dilutions Practice

1. Water is added to 200. mL of a 2.0 M solution of CaCl2 to increase the volume of the solution to 400. mL.  What is the new concentration?

2. To what volume must 1.0 L of a 6.0 M solution of HCl be diluted in order to prepare a 0.2 M solution?

3. How would you prepare 500 mL of a 0.500 M solution of NaOH from a 2 M stock solution?

4.       60. mL of a 1.0 M solution of H2SO4 is mixed with distilled water to make 1 L of solution.  What is the molarity?

5.  What size volumetric flask would be useful in diluting 100. mL of a 3.0 M solution of sucrose to make a 0.60 M solution?

1. 1.0M   2.  30.L   3. put 125 ml of the stock solutions in 500 ml flask then fill to the mark with distilled water and mix.    4.  0.060M    5. 500 ml