What Causes Lower Freezing Point Depression: Ionization or Non-Ionization?

In summary, one mole of two different compounds with the same weight will have different effects on the freezing point of water. The compound that ionizes in water will give a lower freezing point depression compared to the one that does not ionize. This is because the actual freezing point of water will be lower when the compound ionizes, resulting in a larger difference between the actual freezing point and 0°C.
  • #1
magma_saber
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Homework Statement


One mole of two different compounds happens to weight the same, but one compound ionizes in water and the other does not. Which will give the lowest freezing point depression?

Homework Equations





The Attempt at a Solution

 
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  • #2
You just don't ask. You try, you tell us what you did, we push you in the right direction.
 
  • #3
first of all what does lower freezing point depression mean? does it mean the lower freezing point?
 
  • #4
Water freezes at 0°C. Imagine that when you dissolve one of these substances water freezes at -1°C, if you dissolve the other - water freezes at -2°C. Difference between 0 and the actual freezing point is called freezing point depression, in this case it will be 1 or 2 degrees depending on the substance.

But you should know it all, if you are asked this question.
 

1. What is freezing point depression?

Freezing point depression is a phenomenon where the freezing point of a liquid is lowered when another substance, known as a solute, is added to it.

2. What causes freezing point depression?

Freezing point depression is caused by the disruption of the crystal lattice structure of the solvent when a solute is added. This results in a lower freezing point for the liquid.

3. How is freezing point depression measured?

Freezing point depression is measured by comparing the freezing points of a pure solvent and a solution containing a known concentration of a solute. The difference between the two freezing points is known as the freezing point depression.

4. What are the applications of freezing point depression?

Freezing point depression has many practical applications, such as in antifreeze solutions for cars, controlling the texture and taste of ice cream, and in the production of pure substances through fractional freezing.

5. How is freezing point depression related to osmosis?

Freezing point depression and osmosis are related because both involve the movement of solvent molecules across a semi-permeable membrane. Freezing point depression can affect the osmotic pressure of a solution, which can impact the direction and rate of osmosis.

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