化学反应N2+3H2=2NH3的能量变化如题图所示.该反应的热化学方程式是( ) A.N2(g)+3H2(g)=2NH3(1); △H=2kJ·mol-1 B. N2(g)+3H2(g)=2NH3(g); △H=2(b-a)kJ·mol-1 C.N2(g)+H2(g)=NH3(1); △H=kJ·mol-1 D. N2(g)+H2(g)=NH3(g); △H=(a+b)kJ·mol-1 查看更多

 

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化学反应N2+3H2=2NH3的能量变化如题13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的能量变化如题13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的能量变化如题13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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(2008年重庆卷)化学反应N2+3H2=2NH3的能量变化如题13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=(h+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的能量变化如题图所示,该反应的热化学方程式是(     )

A.N2(g)+3H2(g) = 2NH3(g) ;⊿H = 2(b—a)kJ·mol1

B.N2(g)+3H2(g) = 2NH3(l);⊿H = 2(a—b—c)kJ·mol1

C.N2(g)+H2(g) = NH3(l) ;⊿H = (b+c—a)kJ·mol1

D.N2(g)+H2(g) =NH3(g) ;⊿H = (a+b)kJ·mol1

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