Question

the following chemical reaction takes place in aqueous solution: fe(no₃)₂(aq) + na₂s(aq) → fes(s) + 2nano₃(aq) write the net ionic equation for this reaction.

Explanation:

Step1: Write the complete ionic equation

$$\ce{Fe^{2+}(aq) + 2NO^{-}_{3}(aq) + 2Na^{+}(aq) + S^{2-}(aq) \to FeS(s) + 2Na^{+}(aq) + 2NO^{-}_{3}(aq)}$$

Step2: Cancel out the spectator ions

The spectator ions are $\ce{Na^{+}}$ and $\ce{NO^{-}_{3}}$. After canceling them, we get the net ionic equation.

Answer:

$$\ce{Fe^{2+}(aq) + S^{2-}(aq) \to FeS(s)}$$