デュマ法によるモル質量測定実験の迅速化
書誌事項
- タイトル別名
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- Quickening of Molar Mass Measurement using Dumas Method
説明
Molar mass measurement using Dumas method is usually taken in high school chemistryprogram or general university chemistry one for first-year students. However, the ordinary methodtakes much time and therefore it is difficult for students to finish it within a limited lesson period.In this paper, the improved Dumas method, which enables them to measure molar mass withrapidity, is proposed and applied for ethanol, 2-propanol, and ethyl acetate. The main improvementis as follows: First, the RTP constant (=RT/P, R : gas constant, P : atmospheric pressure, T :absolute temperature of boiling water) is used for estimating molar mass directly. Second, thevolume correction is omitted because its contribution to molar mass is negligible. And finally, thebuoyancy parameter (BP) is used for correcting the contribution of buoyancy to sample weight, orthe buoyancy correction is omitted because its weight loss is ca 5% of sample weight. It issuggested that the experiment time is shortened and the complicated calculations are simplifiedusing these methods.
収録刊行物
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- 電気通信大学紀要
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電気通信大学紀要 21 (1-2), 67-71, 2009-01-15
電気通信大学
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詳細情報 詳細情報について
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- CRID
- 1050282677899793408
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- NII論文ID
- 120006315636
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- ISSN
- 09150935
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- 本文言語コード
- ja
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- 資料種別
- departmental bulletin paper
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- データソース種別
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- IRDB
- CiNii Articles
- KAKEN
