沸點上升常數:沸點上升法求分子量的限制(下)
沸點上升法求分子量的限制(下)
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亨利定律
https://www.3people.com.tw
(1) 沸點:溶液之蒸氣壓=大氣壓力時的溫度(液體物質開始汽化成氣體的溫度) ※公式:ΔTb=Kb×Cm ΔTb:溶液的沸點上升 ... Kb:純溶劑的沸點上升常數(ex:水Kb = 0.52)
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單元七溶液7-1 濃度的單位7
http://ep.cust.edu.tw
ΔTb:沸點上升度數m:溶液之重量莫耳濃度. Kb:溶劑莫耳沸點上升常數. (三) 凝固點下降: 將非揮發性的溶質加入溶劑中,溶液的凝. 固點比純溶劑低。 ΔTf = Kf m.
![水溶液凝固點降低與沸點升高](https://i0.wp.com/api.multiavatar.com/%E6%B0%B4%E6%BA%B6%E6%B6%B2%E5%87%9D%E5%9B%BA%E9%BB%9E%E9%99%8D%E4%BD%8E%E8%88%87%E6%B2%B8%E9%BB%9E%E5%8D%87%E9%AB%98+-+%E7%A7%91%E5%AD%B8Online.png?apikey=viVnb6N20jclO8)
水溶液凝固點降低與沸點升高
https://highscope.ch.ntu.edu.t
∆Tf:凝固點下降量,Cm:重量莫耳濃度,Kf :凝固點下降常數。 溶液的沸點上升和凝固點下降相似,溶液濃度愈大,溶液的沸點愈高,非揮發性非電解質的稀薄 ...
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沸點上升法求分子量的限制(上)
https://highscope.ch.ntu.edu.t
為純溶劑的沸點,-Delta H_vap}. 為溶劑的莫耳蒸發熱,R. 為氣體常數,以上這些數值均與溶質無關,即溶液沸點上升常數(K_b. )的大小僅和溶劑有關。
![沸點上升與凝固點下降Boiling](https://i0.wp.com/api.multiavatar.com/%E6%B2%B8%E9%BB%9E%E4%B8%8A%E5%8D%87%E8%88%87%E5%87%9D%E5%9B%BA%E9%BB%9E%E4%B8%8B%E9%99%8DBoiling-Point+Elevation+and+Freezing+....png?apikey=viVnb6N20jclO8)
沸點上升與凝固點下降Boiling
http://earthkart2011.blogspot.
ΔT是沸點提高的幅度,或溶液的沸點與純溶劑的沸點之間的差距;Kb是描述溶劑特質的常數,稱為沸點升高常數model boiling-point elevation constant;m ...
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溶液依數性質
https://skiedeager.pixnet.net
沸點上升(英文: Boiling-point elevation)是描述非揮發性混合溶液的沸點會比非揮發性純溶劑得沸點還要高,也就是說,在非揮發性溶劑中加入非揮發性溶質, ...
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溶液的沸點與凝固點
https://resource.learnmode.net
蒸氣壓與沸點的關係. • 水中加入易揮發溶質(如:酒精)常 ... 沸點上升ΔT b. • 若在溶液中加入不易揮發的溶 ... 為莫耳沸點上升常數=1m該溶. 液沸點上升度數.
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選修化學(上)
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