問題詳情:
N2和H2合成NH3的能量變化如圖所示,該反應的熱化學方程式是( )
A. N2(g)+3H2(g) = 2NH3(g) ;△H = 2(b—a) kJ/mol
B. N2(g)+3H2(g) = 2NH3(l);△H = 2(a—b—c) kJ/mol
C. N2(g)+H2(g) = NH3(l) ;△H = (b+c—a) kJ/mol
D. N2(g)+H2(g) =NH3(g) ;△H = (a+b) kJ/mol
【回答】
B
知識點:物質構成的奧祕單元測試
題型:選擇題