水凝固點下降常數:液、固體分子量求法
液、固體分子量求法
![凝固點降低](https://i0.wp.com/api.multiavatar.com/%E5%87%9D%E5%9B%BA%E9%BB%9E%E9%99%8D%E4%BD%8E-+%E7%B6%AD%E5%9F%BA%E7%99%BE%E7%A7%91%EF%BC%8C%E8%87%AA%E7%94%B1%E7%9A%84%E7%99%BE%E7%A7%91%E5%85%A8%E6%9B%B8.png?apikey=viVnb6N20jclO8)
凝固點降低
https://zh.wikipedia.org
![凝固點下降的測定實驗目的](https://i0.wp.com/api.multiavatar.com/%E5%87%9D%E5%9B%BA%E9%BB%9E%E4%B8%8B%E9%99%8D%E7%9A%84%E6%B8%AC%E5%AE%9A%E5%AF%A6%E9%A9%97%E7%9B%AE%E7%9A%84%3A%E9%80%8F%E9%81%8E%E5%8A%A0%E5%85%A5%E6%BA%B6%E8%B3%AA%E4%BE%86%E6%B8%AC%E9%87%8F%E6%BA%B6%E5%8A%91%E7%9A%84+....png?apikey=viVnb6N20jclO8)
凝固點下降的測定實驗目的
http://orglab.thu.edu.tw
w:溶質重(g),M:溶質分子量(g/mol),Cm:重量莫耳濃度。 Kf 稱為凝固點下降常數(Cryoscopic constant),一般指重量莫耳凝固點常數. (Molar cryoscopic constant)。Kf ...
![水溶液凝固點降低](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+-+%E7%A7%91%E5%AD%B8Online.png?apikey=viVnb6N20jclO8)
水溶液凝固點降低
https://highscope.ch.ntu.edu.t
Kf 稱為凝固點下降常數(Cryoscopic constant),一般指重量莫耳凝固點常數(Molar cryoscopic constant)。Kf值隨溶劑不同而改變,水的Kf = 1.86 K-kg/ ...
![依數性質:以凝固點下降測分子量](https://i0.wp.com/api.multiavatar.com/%E4%BE%9D%E6%95%B8%E6%80%A7%E8%B3%AA%EF%BC%9A%E4%BB%A5%E5%87%9D%E5%9B%BA%E9%BB%9E%E4%B8%8B%E9%99%8D%E6%B8%AC%E5%88%86%E5%AD%90%E9%87%8F.png?apikey=viVnb6N20jclO8)
依數性質:以凝固點下降測分子量
http://gclab.thu.edu.tw
其中Tf 為凝固點,Kf 是溶劑的凝固點下降常數,而m 為重量莫耳濃度。 表一溶劑的凝固點和凝固點下降常數. 溶劑. 凝固點(℃). Kf ( ℃ Kg solvent / mol solute ). 水. 0.0.
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亨利定律
https://www.3people.com.tw
ΔTf:溶液的凝固點下降度數(℃)=純溶劑凝固點-溶液凝固點. Kf:純溶劑的凝固點下降常數(ex:水Kf = 1.86) Cm:溶液的重量莫耳濃度 (3) 適用於稀薄,非電解質溶液及非 ...
![凝固點下降Freezing](https://i0.wp.com/api.multiavatar.com/%E5%87%9D%E5%9B%BA%E9%BB%9E%E4%B8%8B%E9%99%8DFreezing-Point+Depression.png?apikey=viVnb6N20jclO8)
凝固點下降Freezing
http://earthkart2011.blogspot.
純水的凝固點是0℃,在0℃液態純水與固態冰(純水結凍)的蒸汽壓 ... Kf是特定溶劑的常數,稱為凝固點下降常數modal freezing-point depression constant。
![[化學分科總複習] 選修化學(I) Ch3](https://i0.wp.com/api.multiavatar.com/%5B%E5%8C%96%E5%AD%B8%E5%88%86%E7%A7%91%E7%B8%BD%E8%A4%87%E7%BF%92%5D+%E9%81%B8%E4%BF%AE%E5%8C%96%E5%AD%B8%28I%29+Ch3-9.%E6%B6%B2%E9%AB%94%E8%88%87%E6%BA%B6%E6%B6%B2%7C+%E5%87%9D%E5%9B%BA%E9%BB%9E%E4%B8%8B%E9%99%8D+....png?apikey=viVnb6N20jclO8)
[化學分科總複習] 選修化學(I) Ch3
https://www.youtube.com
![溶劑的蒸氣壓下降✪溶液的沸點上升✪溶液的凝固點下降✪ ...](https://i0.wp.com/api.multiavatar.com/%E6%BA%B6%E5%8A%91%E7%9A%84%E8%92%B8%E6%B0%A3%E5%A3%93%E4%B8%8B%E9%99%8D%E2%9C%AA%E6%BA%B6%E6%B6%B2%E7%9A%84%E6%B2%B8%E9%BB%9E%E4%B8%8A%E5%8D%87%E2%9C%AA%E6%BA%B6%E6%B6%B2%E7%9A%84%E5%87%9D%E5%9B%BA%E9%BB%9E%E4%B8%8B%E9%99%8D%E2%9C%AA+....png?apikey=viVnb6N20jclO8)
溶劑的蒸氣壓下降✪溶液的沸點上升✪溶液的凝固點下降✪ ...
http://cweb.saihs.edu.tw
:凝固點下降度數. K f. :莫耳凝固點下降常數 m : 重量莫耳濃度. △T f. = K f. × m. 液體. K f. 液體. K f. 水. 1.86. 苯. 5.12. 醋酸. 3.86. 環己烷. 20.2. Page 23. 23.