The net ionic equation for the overall reaction that occurs when aqueous solutions of carbonic acid and potassium hydroxide are combined is:-
H2CO3 + KOH ⇒ K2CO3 + H2O
The reaction between an acid and base is known as a neutralisation reaction.
In a neutralisation reaction, an acid and a base react to produce a salt and water along with it.
Here H2CO3 is a weak acid and KOH is a base.
We have been given the information that the base i.e KOH is present in excess amount.
Thus, the reaction between H2CO3 and KOH is as follows:
H2CO3 + KOH ⇒ K2CO3 + H2O
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