题干
煤的液化可以合成甲醇。下列有关说法正确的是
①“气化”:C(s)+2H2O(g)
CO2(g)+2H2(g) ΔH1="+90.1" kJ·mol-1
②催化液化Ⅰ:CO2(g)+3H2(g)CH3OH(g)+H2O(g) ΔH2="-49.0" kJ·mol-1
③催化液化Ⅱ:CO2(g)+2H2(g)CH3OH(g)+1/2O2(g) ΔH3=a kJ·mol-1
①“气化”:C(s)+2H2O(g)
CO2(g)+2H2(g) ΔH1="+90.1" kJ·mol-1②催化液化Ⅰ:CO2(g)+3H2(g)
CH3OH(g)+H2O(g) ΔH2="-49.0" kJ·mol-1③催化液化Ⅱ:CO2(g)+2H2(g)
CH3OH(g)+1/2O2(g) ΔH3=a kJ·mol-1| A．催化液化Ⅰ中使用催化剂,反应的活化能Ea、ΔH2都减小 |
| B．反应C(s)+H2O(g)+H2(g)CH3OH(g) ΔH="+41.1" kJ·mol-1 |
| C．ΔH2>ΔH3 |
| D．如图为甲醇燃料电池的工作原理示意图,负极的电极反应为CH3OH-6e-+6OH-CO2↑+5H2O |
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