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

  • G. W. C. Kaye
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.

    62/200 (page 50)
    BOILING-POINT OF WATER UNDER VARIOUS BAROMETRIC PRESSURES Internationa] scale of temp. Pressures in mm. Hg at o° C.; g = 980-665 cm. per sec.2 (Moser, 1932.) Pleavy water boils at 101-42° C.; v.p. at ioo° C. = 721-6 mm. Barometric Height, 0 1 2 3 4 5 6 7 8 9 680 mm. 0 c. 96-910 950 990 031* 071* hi* 151* 191* 231* 271* 690 97-311 35i 39i 43i 47i 5io 550 590 630 669 700 97-709 748 788 827 866 906 945 984 023* 062* 710 98-102 141 180 219 258 296 335 074 4i3 45i 720 98-490 529 567 606 644 683 721 759 798 836 730 98-874 912 95o 989 027* 065* 102* 140* 178* 216* 740 99-254 292 329 367 405 442 480 5i7 554 592 750 99-629 666 704 74i 77 8 815 852 889 926 963 760 ioo-ooo 037 074 110 147 184 220 257 294 330 770 100-367 403 439 476 512 548 584 620 657 693 780 100-729 765 801 836 872 908 944 9S0 015* 051* * For entries marked with an asterisk, the integral number advances by I degree C. VAPOUR PRESSURE OF MERCURY In mms. of mercury at o° C. Reduced from the observations of Hertz, Ramsay and Young, Callendar and Griffiths, Pfaundler, Morley, Gebhardt, Cailletet, Colardeau, Rivi&re. For interpolation from 150 to 270°. log / = 15-24431 - 3623-932jo - 2-367233 log d.(A) From 270° to 450° logp - 10*04087 — 3271*245/0 - 7020537 log# — at the boiling-point = 13*6 mm. per degree (Laby, Phil. Mag., Nov., 1908). Temp. Vap. Press. Temp. Vap. Press. Temp. Vap. Press. Temp. Vap. Press. Temp. Vap. Press. 0°C. mm. •OOOl6* 25° mm. *OOl68 60° mm. •0246 250° mm. 75’83 500° atmos. 8 5 •00026* 30 •OO257 80 •0885 300 248-6 600 22-3 10 •COO43* 35 •OO387 100 •276 356-7 760 700 5° 15 'OOO69 40 •00574 150 2-88 400 1566 800 102 20 'OOIO9 50 •OI22 200 17-81 450 3229 880 162 * Extrapolated by formula A. VAPOUR PRESSURE OF ETHYL ALCOHOL Vap. press, in mms. of mercury at o° C. Calculated by Bunsen from Regnault’s results (1862), which are in good agreement with the mean of those of Ramsay and Young (1886), and Schmidt (1891). Regnault, Vapour press, at -20°, 3*34 mm.; at -10°, 6-47 mm. Temp. 0 | 1 1 2 3 4 5 6 7 8 e 0°C. 10 20 30 12-73 24-08 44*0 78-4 13-65 25 *59 467 14*6 27-19 49‘5 i5*59 28-9 52*5 1662 307 557 177 32-6 59’° 18-84 34'6 62-5 20*04 36-8 66*2 21-31 39-0 70*1 22*66 41-4 74-1 (Ramsay and Young, 1886.) Temp. 30° C. 40° 50° 60° 70° 80° 100° 120° 140° 160° Press. 78*1 mm. i33*4 219*8 35o'2 54i 812 1692 3220 5670 9370 Interpolate logs of vapour pressures as explained on p. 49.