Question

What is the formula of sulfurous acid?

Answer 1

the chemical formula of sulfurous acid is H2SO3. 

Answer 2

Answer: The chemical formula for sulfurous acid is
`H_2SO_3`

Step-by-step 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`