Question

Why do $HCl,HN{O}_3,$ etc., show acidic characters in aqueous solutions while solutions of compounds like alcohol and glucose do not show acidic character?

Answer 1

Hydrogen ions cannot exist alone, but they exist after combining with water molecules.

Thus hydrogen ions must always be shown as $\left(aq\right)$ or hydronium ion $\left(H3O^{+}\right)$

The reaction is:

$HC{l}_{\left(aq\right)}\to H^{+}+C{l}^{-}$

$H^{+}+H_{2}O\to H_3{O}^{+}$

Alcohol and glucose even though they contain hydrogen they do not show acidic character like $HCl$ and $HN{O}_3$