Which Equation Has a ΔH_rxn That Is Not Equal to ΔH^o_f

question 103

Multiple Choice

Which equation has a ΔH_rxn that is not equal to ΔH^o_f of the product?

• A) O₂(g) + H₂(g) → H₂O₂(g)
• B) ½O₂(g) + H₂(g) → H₂O(g)
• C) H₂(g) + ½O₂(g) + → H₂O(l)
• D) NO(g) + ½O₂(g) → NO₂(l)
• E) ½H₂(g) + ½Cl₂(g) → HCl(g)

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