试题 试卷
题型:单选题 题类:常考题 难易度:普通
3Fe2O3(s)+CO(g)→2Fe3O4(s)+CO2(g)+Q1 kJ;
Fe3O4(s)+CO(g)→3FeO(s)+CO2(g)+Q2 kJ;
FeO(s)+CO(g)→Fe(s)+CO2(g)+Q3 kJ.
则Q与Q1、Q2、Q2的关系式正确的是( )
①C(s)+O2(g)═CO2(g)△H1 C(s)+O2(g)═CO(g)△H2
②S(s)+O2(g)═SO2(g)△H3 S(g)+O2(g)═SO2(g)△H4
③H2(g)+O2(g)═H2O(l)△H5 2H2(g)+O2(g)═2H2O(l)△H6
④CaCO3(s)═CaO(s)+CO2(g)△H7 CaO(s)+H2O(l)═Ca(OH)2(s)△H8 .
4P(白、s)+5O2(g)=2P2O5 (s) △H1①
4P(红、s)+5O2(g)=2P2O5 (s) △H2②
则△H1和△H2的关系正确的是:( )
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