试题 试卷
题型:单选题 题类:模拟题 难易度:普通
江苏省南通市2017-2018学年高考理综-化学三模考试试卷
Cu(s)+Cu2+(aq) 2Cu+(aq) ΔH1=a kJ·mol-1
Cl—(aq)+Cu+(aq) CuCl(s) ΔH2=b kJ·mol-1
实验测得电解液pH对溶液中残留c(Cl-)的影响如图所示。下列说法正确的是( )
①“气化”:C(s)+2H2O(g)=CO2(g)+2H2(g)ΔH1=+90.1kJ·mol-1
②催化液化I:CO2(g)+3H2(g)=CH3OH(g)+H2O(g)△H2=-49.0kJ·mol-1
③催化液化Ⅱ:CO2(g)+2H2(g)=CH3OH(g)+ O2(g)△H3=akJ·mol
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