例4(1)(2020·浙江7月选考节选)研究CO2氧-|||-化C2H6制C2H4对资源综合利用有重要意义。-|||-相关的主要化学反应有:-|||-① _(2)(H)_(6)(g)=!=!= (C)_(2)(H)_(4)(g)+(H)_(2)(g)-|||-Delta (H)_(1)=+136kJ/mol-|||-② _(2)(H)_(5)(g)+C(O)_(2)(g)leftharpoons (C)_(2)(H)_(4)(g)+(H)_(2)O(g)+CO(g)-|||-Delta (H)_(2)=+177kJ/mol-|||-③ _(2)(H)_(5)(g)+2C(O)_(2)(g)leftharpoons 4CO(g)+3(H)_(2)(g) Delta (H)_(3)-|||-④ (O)_(2)(g)+(H)_(2)(g)leftharpoons CO(g)+(H)_(2)O(g)-|||-Delta (H)_(4)=+41kJ/mol-|||-已知:298K时,相关物质的相对能量如图所示。-|||-100 C2H4(g)-|||-52-|||-0-|||-H2(g) 0-|||-C2H6(g) -84-|||--100-|||-CO(g) -110-|||--200 H2O(g)-|||--242-|||--300 H2O(1)-|||--286-|||-CO2(g) -393-|||--400-|||-可根据相关物质的相对能量计算反应或变化的 Delta H-|||-(Delta H 随温度的变化可忽略)。-|||-例如: H2O(g)=H2O(1) △2O(g)=H2O(l) △H=-286kJ/mo2O(1) △H=-286 kJ/mol-例4(1)(2020·浙江7月选考节选)研究CO2氧-|||-化C2H6制C2H4对资源综合利用有重要意义。-|||-相关的主要化学反应有:-|||-① _(2)(H)_(6)(g)=!=!= (C)_(2)(H)_(4)(g)+(H)_(2)(g)-|||-Delta (H)_(1)=+136kJ/mol-|||-② _(2)(H)_(5)(g)+C(O)_(2)(g)leftharpoons (C)_(2)(H)_(4)(g)+(H)_(2)O(g)+CO(g)-|||-Delta (H)_(2)=+177kJ/mol-|||-③ _(2)(H)_(5)(g)+2C(O)_(2)(g)leftharpoons 4CO(g)+3(H)_(2)(g) Delta (H)_(3)-|||-④ (O)_(2)(g)+(H)_(2)(g)leftharpoons CO(g)+(H)_(2)O(g)-|||-Delta (H)_(4)=+41kJ/mol-|||-已知:298K时,相关物质的相对能量如图所示。-|||-100 C2H4(g)-|||-52-|||-0-|||-H2(g) 0-|||-C2H6(g) -84-|||--100-|||-CO(g) -110-|||--200 H2O(g)-|||--242-|||--300 H2O(1)-|||--286-|||-CO2(g) -393-|||--400-|||-可根据相关物质的相对能量计算反应或变化的 Delta H-|||-(Delta H 随温度的变化可忽略)。-|||-例如: H2O(g)=H2O(1) △2O(g)=H2O(l) △H=-286kJ/mo2O(1) △H=-286 kJ/mol-