Final answer:
The dissolution of Fe(NO₃)₃ in water yields one Fe³⁺ and three NO₃⁻ ions, while Na₂CO₃ gives two Na⁺ and one CO₃²⁻ ion. These balanced equations are critical for studying reactions in aqueous solutions and conducting multistep reactions, such as the formation of precipitates using solubility rules.
Step-by-step explanation:
The dissolution reactions for the ionic solids Fe(NO₃)₃ and Na₂CO₃ in water involve the separation of the ionic compounds into their constituent ions. When Fe(NO₃)₃ dissolves in water, it dissociates into one Fe³⁺ ion and three NO₃⁻ ions because nitrates are highly soluble. The balanced chemical equation for this dissolution is:
Fe(NO₃)₃ (s) → Fe³⁺ (aq) + 3NO₃⁻ (aq)
Similarly, Na₂CO₃, when it dissolves in water, separates into two Na⁺ ions and one CO₃²⁻ ion. The balanced chemical equation for this process is:
Na₂CO₃ (s) → 2Na⁺ (aq) + CO₃²⁻ (aq)
These equations are essential for understanding reactions in aqueous solutions and predicting the electrical conductivity of these solutions, as the free ions in solution carry the current.