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標題: Determining Boiling Point from GRAPH [打印本頁]

作者: dolphin_ice 時間: 16/3/2008 11:09 PM
標題: Determining Boiling Point from GRAPH
How can one determine the BP of a substance simply by looking a graph of temperature change during simple distillation?

作者: fish 時間: 16/3/2008 11:24 PM

原帖由 dolphin_ice 於 16/3/2008 11:09 PM 發表

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How can one determine the BP of a substance simply by looking a graph of temperature change during simple distillation?

Assume the pressure is constant if not recorded. Graph it out and youprobablycan see slopes and horizontal a line.
圖link

登錄/註冊後可看大圖

作者: dolphin_ice 時間: 16/3/2008 11:29 PM

原帖由 fish 於 16/3/2008 11:24 PM 發表

 登錄/註冊後可看大圖

Assume the pressure is constant if not recorded. Graph it out and you probably can see slopes and horizontal a line.
圖link

登錄/註冊後可看大圖

thank you very much
You are such a genius as usual

作者: fish 時間: 16/3/2008 11:35 PM

原帖由 dolphin_ice 於 16/3/2008 11:29 PM 發表

 登錄/註冊後可看大圖

先不用謝，因為沒有data在手，我不能確正這是正確
如果是出純curve的話我就不太懂了
用boiling point elevation/ heat of vaporization 或許能出answer
前者的factor多，但後者不會夠準

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