エタノール水溶液の密度測定に関するマイクロスケール実験

• 中川 徹夫

• Testuo NAKAGAWA

書誌事項

タイトル別名

• エタノール スイヨウエキ ノ ミツド ソクテイ ニ カンスル マイクロスケール ジッケン

抄録

type:P(論文)

Nine ethanol aqueous solutions(10.0-90.0 mass ％ of ethanol at intervals of 10.0 mass ％）have been prepared and their densities have been determined at room temperature using microscale experiments. An electronic balance and 5mL graduated cylinders have been used as equipment. Observed densities of these solutions are in agreement with reference data. In this procedure, the least amount of ethanol aqueous solutions is ca. 1.2mL and it takes ca. 2minutes to measure the mass and volume of each solution. That is, both the amount of reagents and the experiment time are reduced in comparison with the traditional experiment. Moreover, using our density data, molarities and excess molar volumes are estimated over the whole concentration range, and they are both satisfactory. Therefore, it has been found that our methods of determining densities of ethanol aqueous solutions are useful and informative as teaching materials for high school science and university chemistry.

収録刊行物

• 神戸女学院大学論集 = KOBE COLLEGE STUDIES

  神戸女学院大学論集 = KOBE COLLEGE STUDIES 59 (1), 111-119, 2012-06-20

  [出版社不明]

キーワード

• マイクロスケール実験
• 密度
• エタノール水溶液
• モル濃度
• 過剰モル体積
• microscale experiment
• density
• ethanol aqueous solution
• morality
• excess molar volume

詳細情報

• CRID: 1390009224650391552
• NII論文ID: 110009526267
• NII書誌ID: AN00085725
• ISSN: 03891658
• DOI: 10.18878/00001967
• NDL書誌ID: 023841064
• Web Site: http://id.nii.ac.jp/1281/00001967/
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I023841064
• 本文言語コード: ja
• データソース種別:
  • JaLC
  • IRDB
  • NDL
  • CiNii Articles
  • KAKEN