<img src="https://d5nxst8fruw4z.cloudfront.net/atrk.gif?account=iA1Pi1a8Dy00ym" style="display:none" height="1" width="1" alt="" />
Skip Navigation

Electrolytes and Colligative Properties

Describe effect of ionization on properties of solutions

Atoms Practice
Estimated3 minsto complete
Practice Electrolytes and Colligative Properties
This indicates how strong in your memory this concept is
Estimated3 minsto complete
Practice Now
Turn In
Defrying Nature

Is it possible to change the freezing and boiling point of a substance?

Credit: HouseholdHacker
Source: http://www.youtube.com/watch?v=DZ2tPVSoiH0
License: CC BY-NC 3.0


The “normal” freezing point of water is 32oF, but is it possible to change that?  By adding salt to water, its freezing point is lowered.  Another way of taking advantage of water’s colligative properties is experimenting with water vapor pressure.  If the water vapor pressure above water is lowered, then the boiling point of the water will also be lower.  This can cause water to boil at even room temperature!  Check the demonstrations below to see how adding salt of changing vapor pressure can change freezing and boiling points.

Creative Applications

  1. What is a colligative property and how does it differ from a chemical property?
  2. Antifreeze is used to prevent automobile engines from boiling over.  How does the antifreeze elevate the boiling point and thus prevent the car from boiling over?  Does it matter what solutes are in the antifreeze?
  3. What would happen if the vapor pressure above water was increased?  How would that affect the boiling point?



    Notes/Highlights Having trouble? Report an issue.

    Color Highlighted Text Notes
    Please to create your own Highlights / Notes
    Show More

    Image Attributions

    1. [1]^ Credit: HouseholdHacker; Source: http://www.youtube.com/watch?v=DZ2tPVSoiH0; License: CC BY-NC 3.0

    Explore More

    Sign in to explore more, including practice questions and solutions for Electrolytes and Colligative Properties.
    Please wait...
    Please wait...
    Add Note
    Please to create your own Highlights / Notes