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Does carbonic acid #H_2CO_3# exist?

Answer 1

#H_2CO_3(aq) + NaOH(aq) rarr Na^(+)""^(-)HCO_3 +H_2O(l)#

Carbonic acid is a bit of a #"pushmepullyou"#.....Most likely it exists in solution as #H_2O*CO_2#, i.e. hydrated carbon dioxide, which has the identical formula. But certainly we can deal with it in terms of #H_2CO_3#; and its carbonate and its bicarbonate salts, e.g. #Na_2CO_3#, and #NaHCO_3#, are legion.

I admit that I have no idea what you are asking, but does this satisfy?

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Answer 2

Axel Alvarado

Indeed, when carbon dioxide dissolves in water, aqueous solutions containing carbonic acid (H2CO3) are created.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.