. Carnegie Institution of Washington publication. 92 CONDUCTIVITY AND VISCOSITY OF SOLUTIONS The values for pure-water solutions were taken from the work of West and Jones,1 except those for 15°. For this temperature they were calculated by means of the equations for sodium iodide, and At, = + 1 .883£ + .00829*2 for potassium iodide. These equations apply only to the N/8 solutions, every other dilution requiring a different equation. The accuracy with which West and Jones's values fit the curve is worth noting. 10 15 25° Tempe
. Carnegie Institution of Washington publication. 92 CONDUCTIVITY AND VISCOSITY OF SOLUTIONS The values for pure-water solutions were taken from the work of West and Jones,1 except those for 15°. For this temperature they were calculated by means of the equations for sodium iodide, and At, = + 1 .883£ + .00829*2 for potassium iodide. These equations apply only to the N/8 solutions, every other dilution requiring a different equation. The accuracy with which West and Jones's values fit the curve is worth noting. 10 15 25° Temperature FIG. 39.—N/8 Nal. 15° 25° Temperature FIG. 40.—N/8 Nal. 35" The decrease in conductivity just mentioned is very rapid in the water end of the curve up to the 30 per cent alcohol, and from there on it is much more gradual. We may conclude from this, either that the first addition of alcohol to wrater has a much more marked effect on the association of the water than the addition of a little water to the alcohol has on the association of the alcohol, or that comparatively small quantities of alcohol increase the viscosity of water much more markedly than is the case when small quantities of water are added to alcohol; or, again, that there is a sudden change in the hydration of the dissolved substance caused by the addition of the alcohol, whereas water has a far smaller effect on the alcoholation; or, finally, that perhaps all or some of these factors combine to produce the effect. Let us analyze them. lAmer. Chem. Journ., 34, 377 and 384 (1905).. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Carnegie Institution of Washington. Washington, Carnegie Institution of Washington
Size: 1876px × 1331px
Photo credit: © Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauthorcarnegie, bookcentury1900, bookdecade1900, bookyear1902
