Re: gEDA-user: Isopropyl alcohol vs. ethanol

[Marvin Dickens <marvindickens@xxxxxxxxxxxxx>]

kmk wrote:
> Marvin Dickens wrote:
>
>   
> > sodium
> > is one the most common elements, if not the most common element here on 
> > earth (As well as other places in the universe). Its the reason
> > most flames burn with a yellow color
> >     
>
> The yellow glow of candles and bonfires is soot. The soot particles get
>  white hot while they oxidize in mid air. If you deliberately add
> sodioum cloride to the flame, it adds a thin layer of orange glow.
> Methan gas flames can be tuned from blue to yellow by controling the
> amount of air that mixes with the gas.
>
>
>   
> > - Sodium is in everything.
> >     
>
> ack.
>
> ---<(kaimartin)>---
>   
As I recall, sodium burns yellow - even at levels of less than 1%. But, 
then again,  2-1/2 decades have passed
since I qual/quant chemistry.  So, I looked it up:

http://chemistry.about.com/library/weekly/aa110401a.htm

Apparently,  things are as I remember them. Even so, a yellow flame must 
persist and not intensify with the
addition of more sodium. Therefore, we are both right - depending on the 
circumstances.


Best


Marvin