Boiling point of vodka

What is the boiling point of vodka?


I have found the boiling point of ethanol, ~173 (degrees) F.


However, I am unable to find the boiling point of vodka. I found some information on it, but I do not trust the source. 




Vodka is a solution of water and ethanol.


* Water boils at 100 °C
* Ethanol boils at 78.37 °C


A mixture of both liquids will start boiling close to the boiling point of ethanol (otherwise distillation wouldn't work). 


The lowest boiling temperature is a mixture of:


* 95.63 mass-% ethanol
* 4.37 mass-% water


which boils at 78.2 °C.


Read more about this effect at: [Azeotrope](http://en.wikipedia.org/wiki/Azeotrope) There is also a picture of a phase diagram there.


 11

Wait, [vodka](http://en.wikipedia.org/wiki/Vodka) is quoted at 40% ethanol V/V (so mole fraction about 1/5) and not azeotropic! It should be about 83 °C.


[Graph of vapour-liquid equilibrium for mixture of ethanol and water](http://upload.wikimedia.org/wikipedia/commons/1/1e/Vapor-Liquid_Equilibrium_Mixture_of_Ethanol_and_Water.png)


 0