Active mass

Japanese: 活性質量 - かっせいしつりょう
Active mass

…This relationship was derived in 1867 by CM Gullberg and P. Boge of Norway, who assumed that chemical equilibrium is reached when the rates of the forward and reverse reactions are equal, with the rates being given by v = kC A a C B b … …(2) v ′ = kC M m C N n … …(3). They called the quantity equivalent to concentration the active mass. It was later discovered that the reaction rate equations (2) and (3) they used do not generally hold, but thermodynamics has proven that the relationship in (1) always holds. …

*Some of the terminology explanations that mention "active mass" are listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…この関係は,1867年ノルウェーのC.M.グルベルグとP.ボーゲにより,正反応および逆反応の速度がそれぞれ, vkCAaCBb……   ……(2)  v′=kCMmCNn……  ……(3) で与えられ,正反応と逆反応の速度が等しくなったとき化学平衡に到達するとして導かれた。彼らは濃度に相当する量を活性質量と呼んだ。その後,彼らが用いた反応速度式(2),(3)は一般的には成り立たないことが明らかになったが,(1)の関係がつねに成り立つことは熱力学により証明された。…

※「活性質量」について言及している用語解説の一部を掲載しています。

出典|株式会社平凡社世界大百科事典 第2版について | 情報

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