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Re: [APD] KH goes UP after adding CO2

On 2/4/06, Barry Anderberg <apd at swoobs_org> wrote:
> I can't figure out what it could be that is causing KH to go up..

CO2.  CO2 when added to water produces carbonate and bicarbonate.  What did
your pH do when you added the CO2?

CO2 and water form a complex solution with species that occur at different
ratios at different pH.  If you have a solution that is saturated with
carbonate and you add an acid to it you can see it fizz as CO2 is produced.
This is the same kind of reaction that occurs when you pour an acid on

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