Question

What is the conjugate base of $$HC{O}_3^{-}$$ and $$H_{2}O$$ ?

Answer 1

Hint: In inorganic chemistry, bicarbonate is a type of carbonic acid that is deprotonated. It has the chemical formula $$HC{O}_3^{-}$$ and is a polyatomic anion. The chemical formula for water is $$H_{2}O$$ .

Complete answer:
Conjugate acids and conjugate bases are included in the Bronsted-Lowry acid-base theory. The basic idea behind this theory is that when an acid and a base react, the acid forms its conjugate base, and the base forms its conjugate acid through proton exchange. The Arrhenius theory is a generalization of this theory.
In water, an acid loses a hydrogen ion when it dissociates into its ions. The conjugate base of acid is the species that is produced.
A conjugate acid and a conjugate base undergo the following chemical reaction:
$$HX+H_{2}O\leftrightarrow X^{-}+H_3{O}^{+}$$
Since the conjugate base is an anion, it can be identified in an acid-base reaction.
A more general definition is that the base member, $$X^{-}$$ , of a pair of compounds that turn into each other by losing or gaining a proton is a conjugate base.
So, now we know that when an acid loses a hydrogen ion, the conjugate base is formed. As a result, the conjugate base of any compound is the compound after $$H^{+}$$ has been removed from it.
$${\left(C{O}_3\right)}^{2-}$$ is the conjugate base of the acid $$HC{O}_3^{-}$$ .
The conjugate basis of $$H_{2}O$$ is $$O{H}^{-}$$ .

Note:
The Bronsted-Lowry theory of acids and bases includes conjugate acids and bases. Remember that when an acid loses one of its hydrogen ions, a conjugate base is formed. An anion can be recognized as the conjugate base.