4. Indicate the ionic equation, the net-ionic equation, and the spectator ions of the following

molecular equation.

HCl (aq)

+

Fe2O3 (s)

→

FeCl3 (aq)

+

H2O (1)

Chemical equation:

HCl + Fe₂O₃ → FeCl₃ + H₂O

Balanced Chemical equation:

6HCl (aq) + Fe₂O₃ (s) → 2FeCl₃ (aq) + 3H₂O (l)

Ionic equation:

6H⁺ (aq) + 6Cl⁻ (aq) + 2Fe⁺³ (aq) + 3O²⁻ (aq) → 2Fe⁺³ (aq) + 6Cl⁻ (aq) + 3H₂O (l)

Net ionic equation:

6H⁺ (aq) + 3O²⁻ (aq) → 3H₂O (l)

The Cl⁻ (aq) and Fe⁺³ (aq) are spectator ions that's why these are not written in net ionic equation. The water can not be splitted into ions because it is present in liquid form.

Spectator ions:

These ions are same in both side of chemical reaction. These ions are cancel out. Their presence can not effect the equilibrium of reaction that's why these ions are omitted in net ionic equation.