Q94 E

Question

Which is a stronger acid, sulfurous acid or sulfuric acid? Why?

Step-by-Step Solution

Verified
Answer


 \({\rm{SO}}_4^ - \) is the stronger acid because of stability\({\rm{SO}}_4^ - \)of ion.

1Step 1: To find the stronger acid.

\({{\rm{H}}_2}{\rm{S}}{{\rm{O}}_4}\) is much stronger acid then the \({{\rm{H}}_2}{\rm{S}}{{\rm{O}}_3}\) because there is an extra double bonded oxygen atom on the sulfur atom in sulfuric acid.

The unprotonated \(O\)helps with delocalization of electron in deprotonated ion making the\(SO_4^{2 - }\)ion more stable than the\(SO_3^{2 - }\)ion.