乙醚的沸点为308K,50g乙醚中溶解8g萘的溶液在310.80K时沸腾,求乙醚的摩尔沸点升高常数?
人气：206 ℃ 时间：2020-04-23 13:35:24
解答
萘的分子量为128,则其溶液的质量摩尔浓度为：C = (8/128)mol /0.050kg = 1.25mol/kg
(310.8-308) = KbC
Kb = 2.8/1.25 = 2.24
推荐
猜你喜欢
- The farmer soon came back to get his shoes,but when he put his foot into one of his shoes and felt something hard,he fou
- 求y=lnx在点M（e,1）的切线方程和法线方程.
- It feel like three
- 骨骼不含钙有没有无机盐
- 硫酸铵和硫酸铁铵的ph值大小
- A.refresh B.renew C.stimulate D.encourage
- 如图所示,在△ABC中,AB=AC,点MN分别在BC所在的直线上,且AM=AN,BM与CN相等吗?两种解答方法.
- 巳知电压为380v功率45千瓦,用多大的空气开关,线的大少,是怎么算的!请高手多指教谢谢了.
