The acid formed by hydration of sulfur dioxide is....?

1 Answer
anor277
Jan 30, 2016

Is sulfurous acid, formally #H_2SO_3#.

Explanation:

You can still see these elaborate glass bubblers gathering dust in old laboratories that were expressly for this purpose.

#SO_2(g) + H_2O(l) rarr H_2SO_3(aq)#

This sulfurous acid is saturated #SO_2(aq)#, i.e. #SO_2*H_2O#. This is still an acidic oxide that may be reacted (and titrated) with hydroxide ion.

Related questions
See all questions in Chemical Reactions and Equations
Impact of this question
915 views around the world
You can reuse this answer
Creative Commons License