Re: [Phys-L] Hydrometer (was Hygrometer)

[Bernard Cleyet <bernard@cleyet.org>]

On 2014, Apr 24, , at 14:05, brian whatcott <betwys1@sbcglobal.net> wrote:

> >
> bc  you are  no more puzzled than I am. I thought the evaporation route was quasi-distillation - though evidently methanol is in fact carried off with water and other congenors in a spirit still.
>
> Brian  Altus OK - Indian Territory.
> __________________________


Huh..???

I don’t think salt evaps. along w/ the water?


And yes;  fractional distillation is necessary to separate liquids by distillation.  e.g. many equivalent plates.  

Theoretical plate - Wikipedia, the free encyclopedia  

http://en.wikipedia.org/wiki/Theoretical_plate  

bc used a column of packed beads in vacuum distillation of oil, Sohxlet extracted from marijuana.