A.乙烷、乙炔 | B.甲烷、乙炔 | C.甲烷、丙炔 | D.乙烷、丙炔 |
A.1,3一丁二烯 | B.环丁烯 | C.1一丁炔 | D.2一丁炔 |
| A | B |
(1) | | |
(2) | | |
(3) | | |
(4) | | |
(5) | | |
A.肼是由极性键和非极性键构成的非极性分子 |
B.肼沸点高达l13℃,可推测肼分子间能形成氢键 |
C.肼燃烧的热化学方程式为:N2H4(g)+ O2(g) = N2(g) +2H2O(g);△H = -642 kJ·mol-1 |
D.肼-氧气燃料电池,负极的电极反应为:O2 +2H2O+4e-=4OH- |
A.甲烷、乙烷和乙烯 | B.甲烷、乙烯和1,3-丁二烯 |
C.甲烷、乙烷和乙炔 | D.甲烷、乙烯和丙炔 |
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