Stream distillation-purification of organic compounds

In summary, when transferring water vapor from a steam generator, the pressure of the atmosphere surrounding the organic mixture increases. This requires the organic mixture to be boiled for a longer time in order to equalize the pressure with the water vapor pressure and atmospheric pressure. This process also reduces the boiling point of the organic mixture. However, this does not actually decrease the boiling point, but rather the water vapor forms a complex with the organic mixture and is carried along with the steam.
  • #1
Frigus
337
160
when we transfer water vapours from steam generator isn't it like that the pressure of atmosphere around the organic mixture will increase so we have to boil the organic mixture more so as to make equal the pressure of atmosphere which is water vapour pressure + pressure of atmosphere is equal to the pressure of the organic mixture, as we have to reduce the boiling point of organic mixture but as way do like this shouldn't the boiling point of the mixture will increase.
 
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  • #2
Hemant said:
when we transfer water vapours from steam generator isn't it like that the pressure of atmosphere around the organic mixture will increase

No. The vessel is open.
 
  • #3
Borek said:
No. The vessel is open.
How water vapour can reduce the boiling point as it is increasing the pressure surrounding the organic mixture.
 
  • #4
Not reducing the boiling point at all. It is forming a complex with water vapor and being carried along with the steam.
 

Related to Stream distillation-purification of organic compounds

1. What is stream distillation-purification?

Stream distillation-purification is a process used to separate and purify organic compounds based on their different boiling points. It involves heating a mixture of liquids to their boiling point and collecting the vapors as they condense at different temperatures.

2. How does stream distillation-purification work?

Stream distillation-purification works by heating a mixture of liquids to their boiling point, causing them to vaporize. The vapors are then passed through a condenser, where they are cooled and condensed back into liquid form. The condensed liquids are collected in separate containers, as they have different boiling points and therefore condense at different temperatures.

3. What types of organic compounds can be purified using stream distillation-purification?

Stream distillation-purification is commonly used to purify organic compounds such as alcohols, ethers, and hydrocarbons. It can also be used to separate mixtures of compounds with similar boiling points, such as different types of alcohols.

4. What are the advantages of stream distillation-purification?

Stream distillation-purification is a more efficient and cost-effective method of purifying organic compounds compared to other techniques. It also allows for the separation of compounds with similar boiling points, which may be difficult to achieve using other methods.

5. What are the limitations of stream distillation-purification?

Stream distillation-purification is not suitable for purifying compounds with very high or very low boiling points, as they may decompose or not vaporize at the desired temperature. It also requires a large amount of energy to heat the mixture to its boiling point, making it less environmentally friendly compared to other purification methods.

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