Re: CO2

Brett Lymn (blymn@awadi.com.AU)
Mon, 27 Feb 1995 18:10:02 +1030 (CST)

'Twas me that wrote the suggestion about the yeast + water for CO2

According to Doug Bosco:
>
>When I was a kid, I owned a chemistry set (back in the good old days before
>lawsuits took all of the fun out of being a kid). One of my favorite
>experiments was adding vinegar to baking soda, generating lots of suds and
>CO2. Maybe this is a good method of generating CO2. It involves two common
>and cheap household chemicals and you don't have to worry about yeast.
>

The problem is that the reaction is a bit too fast, all the reagents
are consumed very quickly. You could dink around and arrange a drip
of acid into a jar of soda solution which would do the trick. Either
that or store the gas in a balloon and arrange a nozzle to slowly let
it into the terrarium. All seems a bit complex compared to dumping
some yeast into a sugar solution which, from when I played with this
stuff last, lasts about a week or two of steady CO2 production.

All goes to show there is more than one way to trap a fly ;-)

>You just have to find a way to contain the reaction. That shouldnt be too
>much of a problem.
>

A jar with a balloon on top should do it, this would also maintain the
pressure conveniently and let you know when it is time to make a new
batch (when the balloon goes down :-)

>
>Enjoying watching the freezing rain fall outside.
>

Currently looking forward to a few more days of high 30 deg. C and
then back to the mid 20's.

-- Brett Lymn, Computer Systems Administrator, AWA Defence Industries
===============================================================================
"Also, it takes a lot longer to get up North ..... The slow way"
- "Clever Trevor" Ian Drury