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幾題化學題目求解需算式(20點贈送)

Mar 30th 2014, 07:51

01.在t度C時，將甲苯和環己烷混何，達到平衡時，溶液中含有4.0莫耳甲苯和1.0莫耳環己烷，總蒸氣壓為80mmHg，且蒸氣中甲苯及環己烷的莫耳數相同。假設此混何溶液為理想溶液。一丶求P環己烷(ANS:200)。二丶求蒸氣中的X甲苯為何(ANS:0.5)

02.將1克有機物質溶入10課苯後，苯的凝固點下降了2.56度C，請問此有機物質的分子量為何(ANS:200)（苯的Kf=5.12度C/m）

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