Tables of physical and chemical constants and some mathematical functions / by G.W.C. Kaye and T.H. Laby.

  • Kaye, G. W. C. (George William Clarkson), 1880-1941.
Date:
[1941]
Catalogue details

Licence: Public Domain Mark

Credit: Tables of physical and chemical constants and some mathematical functions / by G.W.C. Kaye and T.H. Laby. Source: Wellcome Collection.

    57/200 (page 45)
    SURFACE TENSIONS SURFACE TENSIONS In dynes per cm. (A) indicates liquid in contact with air, (V) indicates liquid in contact with its vapour. The surface tension of a liquid varies somewhat with the age (and contamination) of the surface. Temperature variation. It follows from Eotvos* rule, that the surface tension T at temp, t is approximately proportional to (t0 — /), where te is the critical temp., the constant of proportionality being much the same for chemically similar substances. The surface tension at te is generally believed to be zero. See Poynting and Thomson’s “ Properties of Matter.” WATER (t0 = 374° C.) Surf. Tens. T at 15° C. Method. Observer. Temp. (/). t</t15 Temp. (/). T,/TIt dynes per cm. 72-8 (A) Vibrating jet Bohr., Phil. Trans. )’°9 0° C. 1*030 60° C. •901 74'3 (A) Vibrating jet Pedersen,/*. Trans. *0 7 10 roio 70 •876 74-2 (A) Capillary waves Kalahne, Ann.d. Phy., 15 1 000 80 •851 73*8 (A) Hanging drop Sentis, 1897 *02 20 •990 90 •827 73'3 (A) Tension of film Hall, 1893 ‘’93 30 •970 100 *80 74*3 (A) Capillary waves Rayleigh, Phil. Map-.. 40 *947 120 *75 73*3 (A) Capillary tube Volkmann, 1895 50 •925 140 •70 7i'4 (V) Capillary tube Ramsay & Shields, ’93 77-6 (A) Pull on ring Weinberg, 1892 Ramsay & Shields, ’93 ; Volk- mann & Brunner Heavy Water: T0= 75-23 ; T20 = 72-8o; T40 = 69-65 ; T60 = 66-16 (Cockett and Ferguson, 1939). Substance. Temp. (t). Surf. Tens. Method. Observer. INORGANIC. Cadmium .... n2 320° C. dynes cm. 630 Weight of drop y y y y Sauerwald, *31 Gold. A 1130 1103 y y Lead. co2 350 453 Curvature of drop Bircumshaw, ’33 Mercury (Tt=T0—0-02/) N2 20 465 >» >> a Potassium. co2 58 364 Weight of drop Quincke Sodium. co2 90 290 >» >> Poindexter, *26 Sulphur (M.P. 1150) . . A 160 59 f Press, reqd.to bub-) Zickendraht, ’06; and Quincke, . A 250 118 ble air from cap. [ „ ... (B.P.) A 445 441 tube thro’ liquid) ’08 Liquid oxygen . . . . A -133 13*1 Capillary waves Grunmach, 1906 „ nitrogen . . . A -196 8*5 „ 1906 „ nitrous oxide . . A -89*4 26*3 „ 1904 N ickel carbonyl, N i (C 0)4 V 198 14*2 Capillary tube Ramsay and Ammonia soln. (d = *96) A 15 64*7 Vibrating jet Shields, 1893 Pedersen, 1907 Sulph? acidsol. (d — 1*14) A 15 74*4 »» » » 1907 CARBON COMPOUNDS. Acetone, (CH3)2CO . . V 16-8 23*3 Capillary tube / Ramsay and Acetic acid, CH3C02H . V 78-3 i5*9 » » \ Shields, 1893 V 20 23‘5 »> >* n 99 V 300 1.16 )) M V Alcohol—methyl, CH40 V 20 23 » V 99 99 V 200 5*2 99 v 99 99 —ethyl,C2H6OH V 20 22*0 3; 99 99 (T, = T0 - *092/) . . V 150 9*5 »» >? 99 99 —propyl («)» V 16*4 23-8 >> 99 99 C3H7OH V 78-3 18*7 99 99 Aniline, CflH6.NH2 . . A 15 43*o Vibrating jet Pedersen, 1907 Benzene, C6H6. A 17-5 29*2 Capillary tube Volkmann (T, = T0 -*146/)