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Chemistry Forums for Students => Inorganic Chemistry Forum => Topic started by: steven8gerrard on June 09, 2012, 09:05:51 AM

Title: Acid and Base
Post by: steven8gerrard on June 09, 2012, 09:05:51 AM

Is there any reaction between carbon dioxide and sodium hydrogencarbonate solution? ???
My thought is that carbon dioxide, an acidic oxide , dissolve in water in the solution to form carbonic acid,so typical acid property will be shown, they react to form sodium carbonate ,carbon dioxide and water...

But,when i tried to write the equation CO2 can be cancelled,Does it mean that Sodium hydrogencarbonate itself,can decompose to form sodium carbonate + CO2+H2O?

Title: Re: Acid and Base
Post by: Borek on June 09, 2012, 09:20:55 AM

CO₂ + H₂O ::equil:: H⁺ + HCO₃^-

or

CO₂ + H₂O ::equil:: H₂CO₃ ::equil:: H⁺ + HCO₃^-

(in practice these are indistinguishable as long as both steps are fast enough)