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(2016年·海口模拟)已知:CH4(g)+2H2O(g)⇌CO2(g)+4H2(g)△H=+165.0kJ•mol﹣1,当生成2g的H2时,吸收的热量为(  )

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CH4(g)+2O2(g)=CO2(g)+4H2O(g)  ΔH=-890 kJ/mol   CH4(g)+2O2(g)=CO2(g)+2H2O(l)  ΔH=+890 kJ/mol   CH4(g)+2O2(g)=CO2(g)+2H2O(l)  ΔH=-890 kJ/mol   CH4(g)+O2(g)=CO2(g)+H2O(l)  ΔH=-890 kJ/mol  
放出的热量为(0.4Q1+0.1Q3)KJ   放出的热量为(0.4Q1+0.05Q2)KJ    放出的热量为(0.4Q1+0.05Q3)KJ   △H2 <△H3  
HCl+NaOH= NaCl+H2O ΔH.<0   2CH3OH(l)+3O2(g) =2CO2(g)+4H2O(l) ΔH.<0   4Fe(OH)2(s)+2H2O(l)+O2(g) = 4 Fe(OH)3(s) ΔH.<0   2H2(g)+O2(g) =2H2O(l) ΔH.<0  
2CH4( g)+4O2(g)=2CO2(g)+4H2O(1) △H = +890kJ·mol-1   CH4(g)+2O2(g)=CO2(g)+2H2O(g) △H = +890 kJ·mol-1   1/2CH4(g)+O2(g)=1/2CO2(g)+H2O(g) △H = —445 kJ·mol-1    CH4(g)+2O2(g)=CO2(g)+2H2O(1) △H = —890 kJ·mol-1  
CH4(g)+2O2(g)=CO2(g)+2H2O(L)  2CH4(g)+4O2(g)=2CO2(g)+4 H2O(L)  CH 4g+2O2(g)=CO2(g)+2H2O(g)  2CH4(g)+4O2(g)=2CO2(g)+4H2O(g)  
放出的热量为(0.4Q1+0.05Q3)KJ/mol    放出的热量为(0.4Q1+0.05Q2)KJ/mol   △H2 > △H3               △H2 <△H3  
CH4 (g)+2NO2 (g)= N2 (g)+CO2 (g)+2H2O (l) △H.=-867 kJ·mol-1   若0.2 mol CH4还原NO2至N2,在上述条件下放出的热量为173.4 kJ   1molCH4催化还原NOx为N2的过程中,若x=1.6,则转移的电子为3.2 mol   若用4.48L CH4还原NO2至N2,整个过程中转移的电子为3.2 mol  
C.(s) + 1/2 O2(g) = CO(g) △H= -110.5 kJ/mol   2H2(g) + O2(g) = 2H2O(l) △H= -571.6kJ/mol   CH4(g) + 2O2(g) = CO2(g) + 2H2O(g) △H= -802.3kJ/mol   CO(g) + 1/2 O2(g) = CO2(g) △H= -283.0kJ/mol  

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