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theory behind mixing solutions

Posted: Fri May 02, 2008 7:34 am
by gregm
When you add 10 mL organic solvent and 10 mL water you do not get 20 mL final solution. Can someone tell be the reason why this happens? I am unable to find a conclusive answer.

Posted: Fri May 02, 2008 11:15 am
by tom jupille
Methanol molecules (for example) stick more tightly to water molecules than they do to each other.

Posted: Fri May 02, 2008 3:21 pm
by Dan
There was an interesting discussion on this topic a while back. Check it out at:

http://www.sepsci.com/chromforum/viewtopic.php?t=6500

Regards,
Dan