From: Dr. S. K. Adhikari (sisir_ad$##$vsnl.com)
Date: Fri Aug 30 2002 - 10:06:00 EDT
Dr.Lalor's question was simple ,but all answers were were not that what he
wanted. Yes please use a Kipp's.At the mid
chamber(that's the 1st of bottom vessel, keep lime stone/marble chips,
bottom chamber thro the funnel(i.e., top add 9N sulphuric acid)
time to time either add water or replace acid or add some chips (depending
how much you're using) thro appropriate chamber.Carbon dioxide is
conveniently dried by bubling thro Conc H2SO4.
Have our past back.
Regards,
Adhikari.S.K.
----- Original Message -----
From: F.J. Lalor <f.lalor$##$ucc.ie>
To: <everybody$##$orglist.net>
Sent: Thursday, August 22, 2002 12:05 AM
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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