Dilution Worksheet

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Dilution Worksheet
1.
Describe how you would prepare 2.00 L of 0.100 M K2CrO4 from 1.75 M K2CrO4 stock solution.
2.
50.00 mL of concentrated nitric acid (16M HNO3) is diluted to 1.000 L. What is the concentration
of the new solution?
3.
A solution is prepared by dissolving 10.8 g ammonium sulfate in enough water to make 100.0 mL
stock solution. A 10.00-mL sample of this stock solution is then placed in a 50.00-mL volumetric
flask and diluted to the mark with water. What is the molarity of the new solution?
4.
30.00 mL of water is added to 20.00 mL of 0.0500 M sodium carbonate. What is the molarity of
sodium ions in the new solution?
5.
If I have 340 mL of a 0.5 M NaBr solution, what will the concentration be if I add 560 mL more
water to it?
6.
If I dilute 250 mL of 0.10 M lithium acetate solution to a volume of 750 mL, what will the
concentration of this solution be?
7.
If I leave 750 mL of 0.50 M sodium chloride solution uncovered on a windowsill and 150 mL of the
solvent evaporates, what will the new concentration of the sodium chloride solution be?
8.
An experiment requires 2.00 L of 0.200 M hydrochloric acid (HCl) solution. What volume of
concentrated hydrochloric acid, containing 11.9 M hydrogen chloride, is needed?
9.
A chemist adds water to 120 mL of a 6.0 M solution of NaOH until the final volume is 2.0 L. What
is the molarity of the resulting solution?
10.
What concentration results when 150 mL of a 0.36 M solution of magnesium sulfate, MgSO4, are
added to enough water to give a final solution volume of 750 mL?
11.
What concentration results when 150 mL of a 0.36 M solution of magnesium sulfate, MgSO4, are
added to 750 mL of water?
12.
Describe how you would prepare 250.0 mL of a 1.00 M NaOH solution.