Measuring Vapor Pressure with an Isoteniscope: A Hands-On Introduction to Thermodynamic Concepts

被引：15

作者：

Chen, Wenqian ^{[1
]}

Haslam, Andrew J. ^{[1
]}

Macey, Andrew ^{[1
]}

Shah, Umang V. ^{[1
]}

Brechtelsbauer, Clemens ^{[1
]}

机构：

[1] Univ London Imperial Coll Sci Technol & Med, Dept Chem Engn, South Kensington Campus, London SW7 2AZ, England

来源：

JOURNAL OF CHEMICAL EDUCATION | 2016年 / 93卷 / 05期

关键词：

First-Year Undergraduate/General; Chemical Engineering; Laboratory Instruction; Hands-On Learning/Manipulatives; Laboratory Equipment/Apparatus; Thermodynamics; Phases/Phase Transitions/Diagrams; PHYSICAL-CHEMISTRY; LAW;

D O I：

10.1021/acs.jchemed.5b00990

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Characterization of the vapor pressure of a volatile liquid or azeotropic mixture, and its fluid phase diagram, can be achieved with an isoteniscope and an industrial grade digital pressure sensor using the experimental method reported in this study. We describe vapor-pressure measurements of acetone and n-hexane and their azeotrope, and how the data can be used to calculate thermodynamic properties of the test liquids,,such as the molar heat of vaporization. This hands-on experience allows students to appreciate important thermodynamic concepts such as phase equilibrium, preparing them for more advanced studies of the subject.

引用

页码：920 / 926

页数：7

共 18 条

[1] THERMODYNAMIC PROPERTIES OF ORGANIC OXYGEN COMPOUNDS .33. VAPOR-PRESSURE OF ACETONE [J].

AMBROSE, D ;

SPRAKE, CHS ;

TOWNSEND, R .

JOURNAL OF CHEMICAL THERMODYNAMICS, 1974, 6 (07) :693-700

[2]

[Anonymous], D4404 ASTM INT

[3]

Antoine C., 1888, SEANCES ACAD SCI, V107, P681

[4]

Clapeyron M. C., 1834, J. Ecole Polytech, P153

[5] PHASE-EQUILIBRIUM, CHEMICAL-EQUILIBRIUM, AND A TEST OF THE 3RD LAW - EXPERIMENTS FOR PHYSICAL-CHEMISTRY [J].

DANNHAUSER, W .

JOURNAL OF CHEMICAL EDUCATION, 1980, 57 (09) :681-682

[6] An inexpensive microscale method for measuring vapor pressure, associated thermodynamic variables, and molecular weight [J].

De Muro, JC ;

Margarian, H ;

Mkhikian, A ;

No, KH ;

Peterson, AR .

JOURNAL OF CHEMICAL EDUCATION, 1999, 76 (08) :1113-1116

[7]

Garland C.W., 2009, EXPT PHYS CHEM

[8]

Halpern A.M., 2006, EXPT PHYS CHEM LAB T, V3rd

[9] A SIMPLE APPARATUS DESIGNED TO MEASURE VAPOR-PRESSURES AND DEMONSTRATE THE PRINCIPLES OF RAOULT LAW [J].

KOUBEK, E .

JOURNAL OF CHEMICAL EDUCATION, 1983, 60 (12) :1069-1069

[10] Raoult's law: Binary liquid-vapor phase diagrams - A simple physical chemistry experiment [J].

Kugel, RW .

JOURNAL OF CHEMICAL EDUCATION, 1998, 75 (09) :1125-1129

← 1 2 →