试题 试卷
题型:单选题 题类:常考题 难易度:普通
黑龙江省哈尔滨市宾县第一中学2019-2020学年高二上学期化学期末考试试卷
已知:碳的燃烧热ΔH1=a kJ·mol-1;
S(s)+2K(s)=K2S(s) △H2=b kJ·mol-1
2K(s)+N2 (g)+3O2(g)=2KNO3(s) △H3= c kJ·mol-1;则x为( )
S(s)+2KNO3(s)+3C(s)=K2S(s)+N2(g)+3CO2(g) ΔH= x kJ·mol-1
已知碳的燃烧热ΔH1= a kJ·mol-1
S(s)+2K(s)=K2S(s) ΔH2= b kJ·mol-1
2K(s)+N2(g)+3O2(g)=2KNO3(s) ΔH3= c kJ·mol-1
则x为( )
①CH3OCH3(g)+H2O(g)═2CH3OH(g)△H=+a kJ•mol﹣1
②CH3OH(g)+H2O(g)═CO2(g)+3H2(g)△H=+b kJ•mol﹣1
③CO(g)+H2O(g)═CO2(g)+H2(g)△H=﹣c kJ•mol﹣1
④CH3OH(g)═CO(g)+2H2(g)△H=+d kJ•mol﹣1
请回答下列问题.
试题篮