Question

An aqueous solution of an acid is characterised by the presence of:

• A. $H^{+}$ ions
• B. $H_2^{+}$ ions
• C. $H_4{O}^{+}$ ions
• D. $H_3{O}^{+}$ ions

Answer 1

The correct option is D $H_3{O}^{+}$ ions

In aqueous solutions acids release $H^{+}$ which gets hydrated to $H_3{O}^{+}$. So, an aqueous solution is characteristics by the presence of $H_3{O}^{+}$ ions.