化学反应N2+3H2=2NH3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(1);△H=2(a-b-c)kJ·mol-1B.N2(g)+3H2(g)=2NH3(

题目简介

化学反应N2+3H2=2NH3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(1);△H=2(a-b-c)kJ·mol-1B.N2(g)+3H2(g)=2NH3(

题目详情

化学反应N2+3H2=2NH3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(1); △H=2(a-b-c)kJ·mol-1
B. N2(g)+3H2(g)=2NH3(g); △H=2(b-a)kJ·mol-1
C. 1/2N2(g)+3/2H2(g)=NH3(1); △H=(h+c-a)kJ·mol-1
D. 1/2N2(g)+3/2H2(g)=NH3(g); △H=(a+b)kJ·mol-1
题型:单选题难度:偏易来源:重庆市高考真题

答案

A

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