Answer : The formula of carbonic acid is, [tex]H_2CO_3[/tex]
Explanation :
Acid : It is a substance that has ability of donating proton or hydrogen ion, [tex]H^+[/tex]. That means, in acid hydrogen should be present in the compound.
The element carbonate is the non-metal polyatomic ion. The stable oxidation state of phosphate ion [tex](CO_3^{2-})[/tex] is, (-2).
When the hydrogen combine with the carbonate ion, it forms hydrogen carbonate (carbonic acid). The formula of carbonic acid is, [tex]H_2CO_3[/tex].
It is an ionic compound in which the a metal (hydrogen) react with the non-metal (carbonate ion) and combine with the an ionic bond by the criss-cross method.
Hence, the formula of carbonic acid is, [tex]H_2CO_3[/tex]
