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题型:单选题 题类:常考题 难易度:普通
天津市第一中学2017-2018学年高二上学期化学期末考试试卷
①6C(s)+5H2(g)+3N2(g)+9O2(g)=2C3H5(ONO2)3(l)△H1
②H2(g)+1/2O2(g)=H2O(g)△H2
③C(s)+O2(g)=CO2(g)△H3
④4C3H5(ONO2)3(l)=12CO2(g)+10H2O(g)+O2(g)+6N2(g)△H4
下列说法错误的是( )
H2O(g)═H2(g)+ O2(g)△H=+241.8kJ/mol
H2(g)+ O2(g)═H2O(1)△H=﹣285.8kJ/mol
当1g液态水变为水蒸气时,其热量变化是( )
⑴H2( g )+ O2( g ) = H2O ( g ) ΔH1= a kJ/mol
⑵2H2( g )+O2( g ) =2H2O ( g ) ΔH2= b kJ/mol
⑶ H2( g )+ O2 ( g ) = H2O ( l ) ΔH3= c kJ/mol
⑷ 2H2( g )+O2( g ) =2H2O ( l ) ΔH4= dkJ/mol
则a、b、c、d的关系正确的是( )
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