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N2和H2合成NH3的能量变化如图所示,该反应的热化学方程式是( ) A.N2(g)+3H2(g) = 2NH3(g) ;△H = 2(b—a) kJ/mol B.N2(g)+3H2(g) = 2NH...
题目内容:
N2和H2合成NH3的能量变化如图所示,该反应的热化学方程式是( )
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
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