RE: ORGLIST:Details of Kipps-like generation of CO2?

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From: Jim Mitchell (j_mitchell$##$cerilliant.com)
Date: Thu Aug 22 2002 - 09:25:25 EDT


Could you get a hold of some dry ice even? Otherwise, maybe you could send
it through a plug of calcium chloride and activated carbon, even packing a
pipette would probably work depending on the scale.

Jim Mitchell
Cerilliant Corporation

-----Original Message-----
From: F.J. Lalor [SMTP:f.lalor$##$ucc.ie]
Sent: Wednesday, August 21, 2002 1:36 PM
To: everybody$##$orglist.net
Subject: ORGLIST:Details of Kipps-like generation of CO2?

Ok - I am fully aware that this is a shamefully elementary question
so no finger-wagging from the intellectual elite please 8-)
For the purposes of a u/g lab experiment I need to generate small
quantities of CO2 - preferably from a Kipps apparatus or something
similar - to do a small-scale carbonation of PhMgBr. (Of course a
cylinder would be easier but .... well, there are reasons). Now of
course I know that all I need to do is drop sulphuric acid on calcium
carbonate. Problem is I cannot find specific details anywhere. All
the older practical textbooks in our library that might have
described the experiment have long ago been dumped. So do I need
conc. or dilute sulphuric acid? How do I dry the CO2 and avoid
entrainment of acidic vapours? Any and all advice will be most
gratefully appreciated.
Regards -
Fergus Lalor

--

-------------------------------------------------- Dr. Fergus Lalor, Senior Lecturer, Chemistry Dept., University College, Cork, IRELAND. Telephone: 353-(0)21-4902317. Fax: 353-(0)21-4274097

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