| 单词 | active mass |
| 释义 | > as lemmasactive mass active mass n. [after French masse active ( C. M. Guldberg & P. Waage Études sur les affinités chimiques (1867) ii. §5.6)] Chemistry the molar concentration of a substance taking part in a reaction (to which, by the law of mass action, the rate of the reaction is proportional); cf. mass action n. (a) at mass n.2 Compounds 2. ΚΠ 1879 London, Edinb., & Dublin Philos. Mag. 5th Ser. 8 183 The force causing the formation of A′ and B′..is proportional to the product of the active masses of A and B. 1955 J. C. Giblin Qualitative & Volumetric Anal. (ed. 2) iv. i. 88 The product of the active masses of hydrion and hydroxylion..is known as the ‘Ionisation Constant’ for water. 2008 A. Tuck Atmospheric Turbulence 144 In a homogeneous system the rate of a chemical reaction is proportional to the active masses of the reacting substances. Active mass is usually taken as molecular concentration. < as lemmas |
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