Debye-Hückel theory

Japanese: デバイ=ヒュッケルの理論 - デバイ=ヒュッケルのりろん(英語表記)Debye-Hückel theory
Debye-Hückel theory
This theory of strong electrolyte solutions was derived by P. Debye and E. Hückel (1923). It is assumed that strong electrolyte solutions are completely ionized, and the cause of the discrepancy between this assumption and the properties of the solution actually measured is attributed to the interaction between the ions. In other words, by assuming that one ion is in a potential field of other ions (ionic atmosphere) that are distributed around it in a spherically symmetric manner on average, the activity of the ion and the electrical conductivity of the solution are derived from electrostatic theory. This is often applied to dilute solutions. This theory is important when considering the reaction rates of electrolyte solutions. (→Onsager equation)

Source: Encyclopaedia Britannica Concise Encyclopedia About Encyclopaedia Britannica Concise Encyclopedia Information

Japanese:
強電解質溶液に関する理論で P.デバイと E.ヒュッケルによって導かれた (1923) 。強電解質溶液は完全に電離していると仮定し,この仮定と実際に測定される溶液の特性とのずれの原因はイオン間の相互作用によるものとした。すなわち1個のイオンはそのまわりに平均して球対称状に分布した他のイオン (イオン雰囲気) のポテンシャルの場にあるとして静電気的理論から,イオンの活量,溶液の電気伝導度を導いた。これは希薄溶液によく適用される。この理論は電解質溶液の反応速度を考察するうえで重要である。 (→オンサーガー方程式 )

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