Which of the following statements concerning methane is correct?
A) It burns with a smoky flame in air
B) It does not react with acids
C) It reacts with iodine readily
D) It is a liquid at room temperature and pressure
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2006-10-19 16:04:40 · 2 個解答 · 發問者 ? 1 in 科學 ➔ 化學
答案應該係b
a:因為methane既carbon chain唔長...所以under complete combustion唔會有smoky flame
b:orgainic solvent唔會同有pole既chemical react (大概意思係咁...我諗我表達上可能有d出入)
c:methane冇c=c double bond之類既野..即係佢係satisfy...所以o係standard condition唔會同iodine反應
d:冇記錯既話佢應該係gas黎架喇...
(供參考)
2006-10-19 16:13:32 · answer #1 · answered by ? 2 · 0⤊ 0⤋
正確答案是B
methane的碳鏈短，燃燒得很完全，不會有黑煙，例如石油氣的燃燒是沒有黑煙的，石油氣的主要成分是methane
methane 和 iodine是沒有反應的。
methane 在室溫和一大氣壓是氣體
2006-10-20 19:42:56 · answer #2 · answered by ? 7 · 0⤊ 0⤋