問題詳情
30. 下列反應及其反應熱分別為：A →2B ∆H1 =a , C → B ∆H2 = b, 2C→ D ∆ H3 = c，則反應A → D之反應熱∆H 為下列何者？
(A) a - b + 2c
(B) a - 2b + c
(C) a + b + c
(D) a + 2b + c
(A) a - b + 2c
(B) a - 2b + c
(C) a + b + c
(D) a + 2b + c
參考答案
答案：B
難度：適中0.5
統計：A(0),B(0),C(0),D(0),E(0)
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