試題詳解

18. Given the following two reactions at 298 K and 1 atm, which of the statements is true?
(A) △H_f for NO₂(g) =△H₂+(1/2)△H₁
(B) △H₁ = △H₂
(C)△H_f for NO(g) = △H₁
(D) △H_f for NO₂(g) = △H₂)
(E) none of these