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反应N2O4(g) 2NO2(g);△H=+57kJ・mol―1。在温度为T1、T2时,平衡体系中NO2的体积分数随压强的变化曲线如图所示。下列说法正确的是( )

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(+4a+2b-2m-4n)   (+4a+2b-2m-4n)KJ/mol    -(+4a+2b-2m-4n)KJ/mol   (+4a+2b-m-2n)KJ/mol  
2N2H4(g) + N2O4(g) = 3N2(g) + 4H2O(g) △H.=–1076.7 kJ/mol   N2H4(g) + 1/2N2O4(g) =3/2N2(g) + 2H2O(g) △H.=–542.7 kJ/mol   2N2H4(g) + N2O4(g) = 3N2(g) + 4H2O(g) △H.=–542.7 kJ/mol   2N2H4(g) + N2O4(g) = 3N2(g) + 4H2O(l) △H.=–1059.3 kJ/mol  
2CH4(g) + 4O2(g) = 2CO2(g) + 4H2O(l);ΔH= +890KJ・mol―1    CH4(g) + 2O2(g) = CO2(g) +2H2O(l); ΔH=+890KJ・mol―1    CH4(g) + 2O2(g) = CO2(g) +2H2O(l); ΔH= -890KJ・mol―1    2CH4(g) + 4O2(g) = 2CO2(g) + 4H2O(l);ΔH= -890KJ・mol―1  
2N2H4(g)+N2O4(g)═3N2(g)+4H2O(g);△H=﹣542.7 kJ/mol   2N2H4(g)+N2O4(g)═3N2(g)+4H2O(g);△H=﹣1059.3 kJ/mol   N2H4(g)+N2O4(g)═N2(g)+2H2O(g);△H=﹣1076.7 kJ/mol   2N2H4(g)+N2O4(g)═3N2(g)+4H2O(g);△H=﹣1076.7 kJ/mol  
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-44.2kJ・mol-1   +44.2kJ・mol-1    -330kJ・mol-1   +330kJ・mol-1  
+262.6kJ・mol-1   -131.3kJ・mol-1
  
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反应①②均为放热反应  反应①②转移的电子数相同  由反应①可推知:CH­4(g)+4NO2(g)=4NO(g)+CO­2(g)+2H2O(l);△H=-a kJ・mol―1,a<574  若用标准状况下4.48L CH4还原NO2至N2,放出的热量的173.4kJ。  
818.5 kJ・mol-1  ―818.5 kJ・mol-1   80.0 kJ・mol-1  ―80.0 kJ・mol-1  
H2O(g) = H2(g)+1/2 O2(g);△H1=+242 kJ・mol-1  2 H2(g)+ O2(g)=2 H2O(l);△H2=- 484 kJ・mol-1  H2(g)+1/2 O2(g)=H2O(g) ;△H1=+242 kJ・mol-1  2 H2(g)+ O2(g)=2 H2O(g);△H2=+484 kJ・mol-1  
由反应①可推知:CH4(g)+4NO2(g)=4NO(g)+CO2(g)+2H2O(1);△H>-574kJ・mol―1  等物质量的甲烷参与反应①②,甲烷完全反应,转移的电子数相同  若用标准状况下4.48LCH4还原NO2至N2,放出的热量为173.4kJ  以上两个反应都是焓减熵增的反应,所以两个反应都易发生,速率快  
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氢气的燃烧热大于242kJ・mol1   ①的反应热为484kJ・mol1  稀硫酸与稀NaOH溶液反应的中和热为-57.31kJ・mol1  稀醋酸与稀NaOH溶液反应生成1mol水,放出57.3kJ热量  
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488.3 kJ・mol-1  -244.15 kJ・mol-1  244.15kJ・mol-1  -488.3kJ・mol-1  
2N2H4(g)+N2O4(g) ====3N2(g)+4H2O(g) ΔH=-542.7 kJ·mol-1   2N2H4(g)+N2O4(g) ====3N2(g)+4H2O(g) ΔH=-1 059.3 kJ·mol-1   N2H4(g)+1/2 N2O4(g) ====3/2N2(g)+2H2O(g) ΔH=-1 076.7 kJ·mol-1   2N2H4(g)+N2O4(g) ====3N2(g)+4H2O(g) ΔH=-1 076.7kJ·mol-1  

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