Consider the Reaction: 2ClF₃(g)+ 2NH₃(g) $\to$ N₂(g)+ 6HF(g)+ Cl₂(g)
When Calculating The

question 20

Multiple Choice

Consider the reaction: 2ClF₃(g) + 2NH₃(g) $\to$ N₂(g) + 6HF(g) + Cl₂(g)
When calculating the $\Delta$ H°_rxn,why is the $\Delta$ H_f° for N₂ not important?

• A)Because nitrogen is in its standard elemental state and no energy is needed for this product to exist.
• B)Because any element or compound in the gaseous state requires a negligible amount of energy to exist.
• C)Because the products are not included when calculating \(\Delta\)H°_rxn.
• D)Because nitrogen is in its elemental state and does not contribute to the reaction itself.
• E)Two of the above statements explain why N₂ is not important when calculating \(\Delta\)H°_rxn.

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