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Dilution Worksheet
Describe how you would prepare 2.00 L of 0.100 M K2CrO4 from 1.75 M
K2CrO4 stock solution.
50.00 mL of concentrated nitric acid (16M HNO3) is diluted to 1.000 L. What
is the concentration of the new solution?
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?
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?
What volume of 0.100 M NaCl is needed to react completely with 5.00 mL of
0.200 M Pb(NO3)2 ?
We need a 0.60 M NaCl solution. Starting with 50.00 mL of 0.300 M NaCl,
what must you do? (Assume there is no other source of NaCl available to
you.)
How would you prepare 25 mL of 0.010M NaCl starting with a 0.500 M NaCl
solution?
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?
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?
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?
To what volume would I need to add water to the evaporated solution in
problem 3 to get a solution with a concentration of 0.25 M?
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?
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?
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?
What concentration results when 150 mL of a 0.36 M solution of magnesium
sulfate, MgSO4, are added to 750 mL of water?
Describe how you would prepare 250.0 mL of a 1.00 M NaOH solution.