摘要:A.N2(g)+3H2(g) = 2NH3kJ?mol-1 B.N2(g)+3H2(g) = 2NH3kJ?mol-1
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化学反应N2+3H2===2NH3的能量变化如右图所示,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-1
C. 1/2 N2 (g)+3/2H2(g)===NH3(l) ΔH=(b+c-a)kJ·mol-1
D. 1/2 N2(g)+3/2H2(g)===NH3(g) ΔH=(a+b)kJ·mol-1
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下列反应中符合图象的是
A.N2(g)+3H2(g) 2NH3(g) ΔH<0
B.2SO3( g) 2SO2(g)+O2(g) ΔH>0
C.4NH3(g)+5O2(g) 4NO(g)+6H2O(g) ΔH<0
D.H2(g)+CO(g) C(s)+H2O(g) ΔH>0
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化学反应N2+3H2=2NH3的能量变化如图所示,E是正值,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 |