Question

The formula for the carbonate ion is CO32−. Predict the formula for carbonic acid.

Answer 1

Answer : The formula of carbonic acid is, $H_2CO_3$

Explanation :

Acid : It is a substance that has ability of donating proton or hydrogen ion, $H^+$. 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 $(CO_3^{2-})$ is, (-2).

When the hydrogen combine with the carbonate ion, it forms hydrogen carbonate (carbonic acid). The formula of carbonic acid is, $H_2CO_3$.

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, $H_2CO_3$

Answer 2

H2CO3 is the formula