buta-1,3-diene 係唔係alkene既一種?

笨貓豬○

2012-10-15 2:08 am

buta-1,3-diene 既係 CH2=CH--CH=CH2 ,係唔係alkene? 呢隻野係就係有C=C double bond, 但係佢既general formula唔係 CnH2n 喎.... 姐係點呀? 搞到好混亂添...

更新1:

唔好意思, 仲有: buta-1,3-diene 同 but-1-ene 係唔係 in same homologous series?

回答 (1)

[匿名]

2012-10-15 6:15 am

✔ 最佳答案

buta-1,3-diene 係 alkene, 要注意一樣野係唔係alkene唔係睇佢既general formula, 而係睇佢既structure入面有冇呢一個functional group (可以有多過1個).
buta-1,3-diene 入面有2個C=C bond, 所以佢係alkene

你得兩個唔可話係form homologous series wor, 起碼要有3個以上既compound你先可以比較到佢地之間有冇common difference.
(definition of homologous series: A series of related chemical compounds that have the same functional group(s) but differ in formula by a fixed group of atoms.)
例如你有ethene, buta-1,3-diene 同 hexatriene, 你就可以發現佢地之間differ by CH2, 所以佢地咪form一個homologous series lor.
不過其實你應該搵唔到第3個compound that can form a series with but-1-ene and buta-1,3-diene.

參考: me

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