Choose the reaction that illustrates ΔH°_f for Ba(NO₃)₂. A) Ba(s) + N₂(g) + 3 O₂(g) → Ba(NO₃)₂(s) B) Ba²⁺(aq) + 2 NO₃^-(aq) → Ba(NO₃)₂(aq) C) Ba(s) + 2 N(g) + 6 O(g) → Ba(NO₃)₂(s) D) Ba(NO₃)₂(aq) → Ba²⁺(aq) + 2 NO₃^-(aq) E) Ba(NO₃)₂(s) → Ba(s) + N₂(g) + 3 O₂(g)

Question

Quizplus · Accepted Answer

The correct reaction for ΔH°f (standard enthalpy of formation) involves forming 1 mole of the compound from its elements in their standard states. Choice A correctly shows the formation of Ba(NO3)2 from its elements (Ba solid, N2 gas, and O2 gas) in their standard states.

Choose the Reaction That Illustrates ΔH°f for Ba(NO3)2

Choose the Reaction That Illustrates ΔH°_f for Ba(NO₃)₂