已知(1):H2(g)+O2(g)=H2O(g)△H1="a"KJ/mol(2)2H2(g)+O2(g)=2H2O(g)△H2="b"KJ/mol(3)H2(g

题目简介

已知(1):H2(g)+O2(g)=H2O(g)△H1="a"KJ/mol(2)2H2(g)+O2(g)=2H2O(g)△H2="b"KJ/mol(3)H2(g

题目详情

已知
(1):H2(g)+  O2(g)=H2O(g)           △H1="a" KJ/mol
(2)2H2(g)+ O2(g)=2H2O(g)           △H2="b" KJ/mol
(3)H2(g)+ O2(g)=H2O(l)             △H3="c" KJ/mol
(4)2H2(g)+ O2(g)=2H2O(l)           △H4="d" KJ/mol
下列关系式正确的是(   )
A.a<c<0B.b>d>0C.2a="b<0"D.2c=d>0
题型:单选题难度:中档来源:不详

答案

C

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