【单选题】已知 C 2 H 2 (g) + 5/2O 2 (g) = 2 CO 2 (g) + H 2 O( l ) Δ r H m Θ 1 C(s) + O 2 (g) = CO 2 (g) Δ r H m Θ 2 H 2 (g) + 1/2O 2 (g) = H 2 O( l ) Δ r H m Θ 3 则 Δ f H m Θ (C 2 H 2 , g) 与 Δ r H m Θ 1 、 Δ r H m ...
【单选题】已知 C 2 H 2 (g)+ 5/2O 2 (g)= H 2 O(l)+ 2CO 2 (g) ⊿ r H m ɵ , 1 C(s)+ O 2 (g) = CO 2 (g) ⊿ r H m ɵ , 2 H 2 (g) + 1/2O 2 (g) = H 2 O(g) ⊿ r H m ɵ , 3 则 ⊿ f H m ɵ (C 2 H 2 , g) 与 ⊿ r H m ɵ , 1 、 ⊿ r H m ɵ...
A.
⊿ f H m ɵ (C 2 H 2 , g) = ⊿ r H m ɵ , 1 + ⊿ r H m ɵ , 2 + ⊿ r H m ɵ , 3
B.
⊿ f H m ɵ (C 2 H 2 , g) =2 ⊿ r H m ɵ , 2 - ⊿ r H m ɵ , 1 - ⊿ r H m ɵ , 3
C.
⊿ f H m ɵ (C 2 H 2 , g) =2 ⊿ r H m ɵ , 2 + ⊿ r H m ɵ , 1 + ⊿ r H m ɵ , 3
D.
⊿ f H m ɵ (C 2 H 2 , g) =2 ⊿ r H m ɵ , 2 - ⊿ r H m ɵ , 1 + ⊿ r H m ɵ , 3