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Worksheet 28: Effect of solutes . Topic 7

Set A: Comparing Freezing and Boiling points Objective: To test your ability to determine which
solution will have the lowest and the highest
freezing and boiling points.

For each solution, the concentration and solute of the solution are given. For each set of solutions:
Write “highest FP and Lowest BP” underneath the beaker whose solution will freeze at the highest

temperature and boils at the lowest temperature.
Write “Lowest FP and Highest BP” underneath the beaker whose solution will freeze at the lowest
temperature and boils at the highest temperature.

Set 1.
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0.02 M 0.015 M 0.025 M 0.028 M
KBr KBr KBr KBr

Set 2.
1 M 2 M 1 M 2 M
NaI NaI C2H5OH C2H5OH

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Need help? Study Book pg 160 – 162 Set 30 - 33

Set 3.

0.1 M 0.1 M 0.1 M 0.1 M
NaCl MgCl2 AlCl3 C6H12O6

Set 4.
2 M 1 M 2 M 1 M
K2SO4 NH4Cl KNO3 CH3OH

Set 5.

3 g of NaCl 6 g of NaCl 3 g of NaCl 6 g of NaCl
dissolves in dissolves in
dissolves in
dissolves in
200 ml H2O 300 ml H2O 300 ml H2O 200 ml H2O

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