Choose the Reaction That Illustrates _DfH° for Ca(NO₃)₂

question 33

Multiple Choice

Choose the reaction that illustrates _DfH° for Ca(NO₃) ₂.

• A)Ca(s)+ N₂(g)+ 3O₂(g)→ Ca(NO₃)₂(s)
• B)Ca²⁺(aq)+ 2NO₃^-(aq)→ Ca(NO₃)₂(aq)
• C)Ca(s)+ 2N(g)+ 6O(g)→ Ca(NO₃)₂(s)
• D)Ca(NO₃)₂(aq)→ Ca²⁺(aq)+ 2NO₃^-(aq)
• E)Ca(NO₃)₂(s)→ Ca(s)+ N₂(g)+ 3O₂(g)

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