What is #"sulfurous acid"#?

1 Answer
May 12, 2017

Answer:

I am not sure what you are asking.

Explanation:

Sulfurous acid is supplied as an aqueous solution labelled #H_2SO_3#. It has smell that is not entirely unpleasant; I tend to like it because it has a clean, medicinal smell. It could equally be represented as #O_2S*H_2O#, i.e. the water adduct of #SO_2#. Both #SO_2# and #SO_3# have some water solubility, and are the acid anhydrides of sulfurous and sulfuric acid.