Sciencemadness Discussion Board

Drying agent for H2SO4?

mycotheologist - 13-5-2012 at 07:57

I found this table of drying agents:
http://delloyd.50megs.com/moreinfo/drying.html
which is very useful. I was surprised to see CuSO4 can be used to dry acetic acid. I read on a thread on this forum that CuSO4 also dries nitric acid. What about H2SO4. I've read about sulphuric acid being used as a drying agent but I've never heard of a compound for drying it.

hissingnoise - 13-5-2012 at 08:44

Phosphorus pentoxide will dehydrate H<sub>2</sub>SO<sub>4</sub>, even producing some SO<sub>3</sub>.


Adas - 13-5-2012 at 08:46

Or simply boil off the water.

Eddygp - 13-5-2012 at 10:22

Concentrated H2SO4 is a strong dehydrating agent. It will turn sucrose into graphite :D.

elementcollector1 - 13-5-2012 at 19:16

NaOH?

Endimion17 - 14-5-2012 at 06:27

Quote: Originally posted by elementcollector1  
NaOH?


Is that a joke or what? :D