15.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 B.N2(g)+3H2(g) = 2NH3kJ/mol C.N2(g)+H2(g) = NH3kJ/mol D.N2(g)+H2(g) =NH3kJ/mol 查看更多

 

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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(l) ⊿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(l)⊿H = (b+c—a)kJ·mol-1
D.1/2N2(g)+3/2H2(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(l) ΔH=2(a-b-c)kJ/mol
B.N2(g)+3H2(g)===2NH3(g) ΔH=2(b-a)kJ/mol
C.1/2N2(g)+3/2H2(g)===NH3(l) ΔH=(b+c-a)kJ/mol
D.1/2N2(g)+3/2H2(g)===NH3(g) ΔH=(a+b)kJ/mol

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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(l) ΔH=2(a-b-c)kJ/mol
B.N2(g)+3H2(g)===2NH3(g) ΔH=2(b-a)kJ/mol
C.1/2N2(g)+3/2H2(g)===NH3(l) ΔH=(b+c-a)kJ/mol
D.1/2N2(g)+3/2H2(g)===NH3(g) ΔH=(a+b)kJ/mol

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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

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