Answer: The chemical formula for sulfurous acid is \(H_2SO_3\)
Explanation:
Sulfurous acid consists of 3 elements which are hydrogen, sulfur and oxygen atoms.
This compound is made by the combination of hydrogen ion \((H^+)\) and sulfite ion \((SO_3^{2-})\)
By criss-cross method, the oxidation state of the ions are exchanged and they form the subscripts of the opposite ions. This results in the formation of a neutral compound.
Thus, the chemical formula for this compound is \(H_2SO_3\)
