A hydrogen ion, H+, in aqueous solution may also be written as
(1) H2O (3) H3O+
(2) H2O2 (4) OH–


Sagot :

The answer is (3) H3O+. In solution, H+ exists interchangeably bound to H2O (as the hydronium ion) and as a free ion. Some books represent strong acids in net ionic equations as simply H3O+

Answer: Option (3) is the correct answer.

Explanation:

In an aqueous solution, a compound exists in the form of ions that is in the form of protons and electrons.

Protons are positively charged and electrons are negatively charged. A proton (usually hydrogen ion, [tex]H^{+}[/tex]) in water (solvent) also exists as [tex]H_{3}O^{+}[/tex].

For example, [tex]H_{2}O + HCl \rightleftharpoons H_{3}O^{+} + Cl^{-}[/tex]

This shows that the conjugate acid of [tex]H_{2}O[/tex] is [tex]H_{3}O^{+}[/tex].

Thus, we can conclude that a hydrogen ion, H+, in aqueous solution may also be written as [tex]H_{3}O^{+}[/tex].