| 单词 | activity coefficient |
| 释义 | > as lemmasactivity coefficient activity coefficient n. Physical Chemistry the ratio of the activity (sense 2d) of a substance to its concentration (a measure of deviation from ideal behaviour). ΘΚΠ the world > matter > chemistry > physical chemistry > activity coefficient > [noun] activity coefficient1911 1911 A. A. Noyes & W. C. Bray in Jrnl. Amer. Chem. Soc. 33 1646 For each substance in solution, as the concentration is decreased, the ratio of activity to concentration, the activity coefficient (A/C) approaches a constant value, which in aqueous solutions may for convenience be assumed to be unity at infinite dilution. 1978 P. W. Atkins Physical Chem. xii. 357 Once the standard electrode potential of a cell is known, the activity coefficient can be determined for any ionic strength simply by measuring the e.m.f. of the cell. 2008 Jrnl. Alloys & Compounds 462 345/2 Those crystalline phases and chemical short-range order significantly decrease the activity coefficient of zirconium. < as lemmas |
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