#azeotropes

[quietimtryingtostudy]

Azeotropes are binary mixtures having the same composition in liquid and vapour phase and boil at constant temperatures

[chem-geek-love]

[paroxysmofpassion]

Azeotropes

I'm reading about azeotropes (impurities in a liquid solution) and its relation to boiling point in my lab report thingy, and it's really tough to get through because it phrases sentences in a way that uses the same word like a billion times in a paragraph. It's taking me all morning to read 20 pgs of this stuff, but you know what.. I'll be happy when I'm done.

All it simply says is that the boiling point decreases when there's an impurity (i.e. BP of water is 100ºC and BP of ethanol is 78.1ºC, so pure water boils at 100ºC and pure ethanol boils at 78.1ºC). Azeotropes (i.e. 1:1 ratio or 50% of ethanol and water solution) have impurities, so their BP decreases. You can't use simple distillation because the components/concentrations of the solution is the same as it is in vapor phase. So, when the 50:50 solution evaporates, the vapor will still have 50% of ethanol. They use benzene or some other shit to try and bond with the water molecules and distill that to separate water from the alcohol.

Haha, Idk why I'm writing this out on Tumblr. There's a sort of relief knowing I can write about it here like I know my stuff well enough to explain it, I guess. Sometimes, I write out my essays in this text box. xD