Which of the following reactions is associated with the lattice energy of Li₂O (Δ_r)? A) Li₂O(s) → 2Li⁺(g) + O²⁻(g) B) 2Li⁺(aq) + O²⁻(aq) → Li₂O(s) C) 2Li⁺(g) + O²⁻(g) → Li₂O(s) D) Li₂O(s) → 2Li⁺(aq) + O²⁻(aq) E) 2Li(s) + O₂(g) → Li₂O(s)

Question

Quizplus · Accepted Answer

The lattice energy is the energy released when 1 mole of a crystalline solid is formed from its ions in the gas phase. Thus, the reaction that involves the formation of Li₂O from gaseous Li⁺ and O²⁻ ions is the reaction associated with lattice energy. This is represented by choice C, which shows the formation of Li₂O(s) from gaseous Li⁺ and O²⁻(g).

Which of the Following Reactions Is Associated with the Lattice