试题 试卷
题型:单选题 题类:常考题 难易度:普通
浙江省嘉兴市2018-2019学年高二下学期化学期末考试试卷
下列说法正确的是( )
图为两种途径制备硫酸的过程,反应条件略.下列说法不正确的是( )
①C(s)+O2(g)═CO2(g)△H1 C(s)+ O2(g)═CO(g)△H2
②S(s)+O2(g)═SO2(g)△H1 S(g)+O2(g)═SO2(g)△H2
③H2(g)+ O2(g)═H2O(l)△H1 2H2(g)+O2(g)═2H2O(l)△H2
④CaCO3(s)═CaO(s)+CO2(g)△H1 CaO(s)+H2O(l)═Ca(OH)2(s)△H2 .
①2HI(g)=H2(g)+I2(g)△H1
②SO2(g)+I2(g)+2H2O(g)=H2SO4(l)+2HI(g)△H2
③H2SO4(l)=H2O(g)+SO2(g)+ O2(g)△H3
④2H2O(g)=2H2(g)+O2(g)△H4
△H4与△H1、△H2、△H3之间的关系是:△H4={#blank#}1{#/blank#}.
①I2(g)+H2(g)⇌2HI(g)△H=﹣9.48KJ•mol﹣1
②I2(s)+H2(g)⇌2HI(g)△H=+26.48KJ•mol﹣1
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