ColligativePropertyLab

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Colligative Properties Take-Home Lab



Boiling Point Elevation

1. Find a 1 or 2 quart saucer pan and a small drinking glass (make of glass). Make sure that the glass is able to easily fit inside the saucer pan and not be more than 25%-50% of the volume of the saucer pan. DO NOT USE A GOOD GLASS. SOMETIMES THEY WILL BREAK.

2. Fill the glass 1/4 full with water and then dissolve as much table salt (NaCl as you can without leaving a significant amount of table salt on the bottom of the glass.(stirring speeds up the process).

3. Fill the saucer pan 1/2 filled with water.

4. Carefully put the glass into the saucer without the two liquids from mixing. If they mix, you need to repeat Step 2 & 3 over again. (The water level in saucer pan needs to be higher than water in the glass.

5. Now heat both liquids on the stove.

6. Make your observations as you watch the two liquids come to boil.

Observations

Questions - see handout below


















Colligative Properties Take-Home Lab
Page 2



Freezing Point Depression

1. Find a plastic ice cube tray.

2. Prepare a salt solution as in Step 2 of the Boiling Point Elevation section of lab.

3. Add the salt solution to 1/2 of the ice cube tray. LEAVE ONE SET OF CUBES DEPRESSION BETWEEN THE TWO LIQUIDS.

4. Add pure water to the other 1/2 of the ice cube tray.

5. Carefully, place the ice cube tray into the freezer.

6. Periodically, observe what is happening to the liquids in the ice cube trays. Record your observations.


Observations




Questions
Click here to find and questions for this lab, Questions for Colligative Property Lab



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Last edited May 12, 2021 9:00 am (diff)
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