Measuring vapour pressure with an isoteniscope - a hands-on introduction to thermodynamic concepts
| Autor: | Umang V. Shah, Wenqian Chen, Andrew Macey, Clemens Brechtelsbauer, Andrew J. Haslam |
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| Rok vydání: | 2016 |
| Předmět: |
Science instruction
Chemistry Vapor pressure Phase equilibrium 05 social sciences 050301 education Thermodynamics General Chemistry Enthalpy of vaporization 010402 general chemistry 01 natural sciences Pressure sensor 0104 chemical sciences Characterization (materials science) Education Chemical engineering Azeotrope Fluid phase 03 Chemical Sciences 0503 education 13 Education |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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