| 沸点升高法测化合物的相对分子量 |
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| 引用本文： | 邵建新,朱兰英,孙德志,魏西莲. 沸点升高法测化合物的相对分子量[J]. 聊城大学学报(自然科学版), 1995, 0(1) |
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| 作者姓名： | 邵建新 朱兰英 孙德志 魏西莲 |
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| 作者单位： | 昌潍医学院化学教研室 |
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| 摘 要： | 介绍改进后的一种利用沸点升高法测化合物的相对分子质量的实验方法：以乙醇为溶剂、相对分子质量已知的尿素作为样品，测定沸点升高常数和苯甲酸的相对分子质量．所需设备简单、测量精度符合物理化学实验教学的要求．
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| 关 键 词： | 相对分子质量，依数性，沸点 |
RELATIVE MOLECULAR WEIGHT DETERMINATION BY BOILING-POINT ELEVATION |
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| Shao Jianxin, Zhu Lanyeng, Sun Dezhi, Wei XiLian. RELATIVE MOLECULAR WEIGHT DETERMINATION BY BOILING-POINT ELEVATION[J]. JOURNAL OF LIAOCHENG UNIVERSITY (NATURAL SCIENCE, 1995, 0(1) |
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| Authors: | Shao Jianxin Zhu Lanyeng Sun Dezhi Wei XiLian |
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| Affiliation: | Shao Jianxin; Zhu Lanyeng; Sun Dezhi; Wei XiLian |
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| Abstract: | We have develiped an experimental method for determining the relative molecular weight of an unknown compund.In the experiment procedure ethanol is the soluent,and urea or benzoic acid is the solute of which the molecular weight is known or unknown.By measuring boiling point elevations,the boiling point elevation constant for ethanol(Kb)and the molecular weight of benzoic acid were detected.This experiment needs simple and unexpensive apparatus. |
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| Keywords: | Relative molecular weight Colligative property Boiling point |
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