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Author: Subject: Does H2CO3 exist ?
International Hazard

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[*] posted on 16-10-2012 at 08:17
Does H2CO3 exist ?

According to this page this compound is hard to isolate if at all.
It seems in water it dissociates into water and CO2 and can nearly only exist in HCO3- and CO3 2- anions.

No physical and chemical properties are known.

What are your opinions ?
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National Hazard

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[*] posted on 16-10-2012 at 08:18

There is already a thread on this forum that goes into this in detail.


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potassium Prometheus

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[*] posted on 16-10-2012 at 16:15

which thread?

H2CO3 can be isolated and is very stable (in a pure state):

The half life of pure H2CO3 is 180.000 years at room temperature! Water catalyses the decomposition, which is further driven by autocatalysis. 1 or 2 molecules of water are enough to start the reaction. That's why it's hard to isolate. But it can be isolated in a pure state. And the molecule H2CO3 also exists in the rain, tap water, and so on (1% of the CO2 exists as H2CO3)...

A photo of carbonic acid:
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