摘要：7．化学反应N2 + 3H2 = 2NH3的能量变化如下图所示.该反应的热化学方程式是( ) A. N2(g) + 3H2(g) = 2NH3kJ·mol-1 B. N2(g) + 3H2(g) = 2NH3kJ·mol-1 C. N2(g) + H2(g) = NH3kJ·mol-1 D. N2(g) + H2(g) = NH3kJ·mol-1
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化学反应N2+3H2=2NH3的能量变化如下图所示，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. 
N2(g)+
H2(g) === NH3(1) △H＝(b+c-a)kJ·mol-1
D. N2(g)+H2(g) === NH3(g) △H＝(a+b)kJ·mol-1
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化学反应N2+3H2=2NH3的能量变化如下图所示，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． N2(g)+ H2(g) ===NH3(1)△H＝(b+c-a)kJ·mol-1 |
| D．N2(g)+H2(g) ===NH3(g)△H＝(a+b)kJ·mol-1 |
化学反应N2+3H2=2NH3的能量变化如下图所示，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．N2(g)+H2(g) === NH3(1) △H＝(b+c-a)kJ·mol-1
D．N2(g)+H2(g) === NH3(g) △H＝(a+b)kJ·mol-1
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B．N2(g)+3H2(g) === 2NH3(g) △H＝2(b-a)kJ·mol-1
C．N2(g)+H2(g) === NH3(1) △H＝(b+c-a)kJ·mol-1
D．N2(g)+H2(g) === NH3(g) △H＝(a+b)kJ·mol-1
N2(g)+
H2(g) === NH3(1) △H＝(b+c-a)kJ?mol-1
N2(g)+