Effect of a soluble volatile impurity on the boiling point?

In summary, the presence of a soluble volatile impurity can significantly affect the boiling point of a liquid. This is due to the impurity's ability to lower the vapor pressure of the solution, resulting in a higher boiling point compared to the pure solvent. The extent of this effect depends on the concentration and nature of the impurity, as well as the properties of the solvent. Ultimately, the presence of a soluble volatile impurity can alter the boiling point of a liquid, making it an important consideration in many industrial and scientific applications.
  • #1
a_zed24
Hi everyone, just wanted to know how does a soluble, volatile impurity affect the boiling point of a liquid? I know it depends on the difference between the boiling points of the liquid and the impurity, but I'm afraid i still didn't get the point.
Thanks
 
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FAQ: Effect of a soluble volatile impurity on the boiling point?

What is a soluble volatile impurity?

A soluble volatile impurity is a substance that can dissolve in a liquid and easily evaporate at a relatively low temperature.

How does a soluble volatile impurity affect boiling point?

A soluble volatile impurity can lower the boiling point of a liquid by disrupting the intermolecular forces between the liquid molecules, making it easier for the liquid to change into a gas.

What is the relationship between the amount of impurity and the boiling point?

The more soluble volatile impurity present in a liquid, the greater the decrease in boiling point. This relationship is known as Raoult's law.

Can a soluble volatile impurity also increase the boiling point?

Yes, in some cases, a soluble volatile impurity can increase the boiling point of a liquid. This can happen when the impurity forms strong intermolecular bonds with the liquid molecules, making it more difficult for the liquid to change into a gas.

How can the effect of a soluble volatile impurity on boiling point be measured?

The effect of a soluble volatile impurity on boiling point can be measured by conducting a boiling point elevation experiment, where the boiling point of a pure liquid is compared to the boiling point of a solution containing the impurity.

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