To Which One of the Following Reactions Occurring at 25°C $\Delta$

question 28

Multiple Choice

To which one of the following reactions occurring at 25°C does the symbol $\Delta$ H°_f[HNO₃(l) ] refer?

• A)H(g)+ N(g)+ O₃(g)\(\rarr\) HNO₃(l)
• B)(1/2)H₂(g)+ (1/2)N₂(g)+ (3/2)O₂(g)\(\rarr\) HNO₃(l)
• C)HNO₃(l)\(\rarr\) (1/2)H₂(g)+ (1/2)N₂(g)+ (3/2)O₂(g)
• D)HNO₃(l)\(\rarr\) H(g)+ N(g)+ 3O(g)
• E)H₂(g)+ N₂(g)+ O₃(g)\(\rarr\) HNO₃(l)

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