Química Nova | |
Determination of the enthalpy of vaporization of liquid compounds by the Smith Menzies (isoteniscope) method | |
Santin Filho, Ourides1  Gerola, Adriana Passarella1  Peloi, Lilian Somenci1  Hioka, Noboru1  Universidade Estadual de Maringá, Maringá, Brasil1  Kato, Lilian Akemi1  | |
关键词: enthalpy of vaporization; isoteniscope; organic compounds.; | |
DOI : 10.1590/S0100-40422010000200043 | |
学科分类:化学(综合) | |
来源: Sociedade Brasileira de Quimica | |
【 摘 要 】
This article proposes an experimental procedure to determine the enthalpy (and entropy) of vaporization of organic liquid compounds, by the Smith-Menzies (isoteniscope) method. The values of vapor pressure at different temperatures were obtained and ΔvH (and ΔvS) were graphically determined, using the Clausius-Clapeyron equation. The results for diethyl-ether, propanone, ethanol and n-hexane are in very good agreement with those from literature. A historical and thermodynamic discussion on equations that correlates vapor pressures and temperature precedes the experimental proposition.
【 授权许可】
Unknown
【 预 览 】
Files | Size | Format | View |
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RO201912050594894ZK.pdf | 394KB | download |