A.N2H4+O2=N2+2H2O△H = —534.4kJ/mol |
B.N2H4(g)+ O2(g)=N2(g)+2H2O(g)△H = —16.7kJ/mol |
C.N2H4(g)+O2(g)=N2(g)+2H2O(l)△H = —534.4kJ/mol |
D.N2H4(g)+O2(g)=N2(g)+2H2O(g)△H = —534.4kJ/mol |
A.①③ | B.②④ | C.②③ | D.①④ |
A.50kJ | B.30kJ | C.80kJ | D.20kJ |
A.1:3 | B.3:1 | C.1:4 | D.1:1 |
A.2H2(g)+ O 2(g) = 2H2O(1)H = —142.9kJ·molˉl |
B.2H2(g)+ O 2(g) = 2H2O(1)H = —571.6kJ·molˉl |
C.2H2+O2 = 2H2OH = —571.6lkJ·molˉl |
D.H2(g)+O 2(g) = H2O(1)H = +285.8kJ·molˉl |
© 2017-2019 超级试练试题库,All Rights Reserved.