+--------------------------------------------+----------------+ | | KCl | NaCl | LiCl | +---------+-----------------+----------------+----------------+ | m | u + v u v | u + v u v |u + v u v | +---------+-----------------+----------------+----------------+ | 0 | 1350 660 690 | 1140 450 690 | 1050 360 690 | | 0.0001 | 1335 654 681 | 1129 448 681 | 1037 356 681 | | .001 | 1313 643 670 | 1110 440 670 | 1013 343 670 | | .01 | 1263 619 644 | 1059 415 644 | 962 318 644 | | .03 | 1218 597 621 | 1013 390 623 | 917 298 619 | | .1 | 1153 564 589 | 952 360 592 | 853 259 594 | | .3 | 1088 531 557 | 876 324 552 | 774 217 557 | | 1.0 | 1011 491 520 | 765 278 487 | 651 169 482 | | 3.0 | 911 442 469 | 582 206 376 | 463 115 348 | | 5.0 | | 438 153 285 | 334 80 254 | | 10.0 | | | 117 25 92 | +---------+-----------------+----------------+----------------+ These numbers show clearly that there is an increase in ionic velocity as the dilution proceeds. Moreover, if we compare the values for the chlorine ion obtained from observations on these three different salts, we see that as the concentrations diminish the velocity of the chlorine ion becomes the same in all of them. A similar relation appears in other cases, and, in general, we may say that at great dilution the velocity of an ion is independent of the nature of the other ion present. This introduces the conception of specific ionic velocities, for which some values at 18° C. are given by Kohlrausch in Table X.:-- Table X. +------------------------------------+ | K 66 × 10^-5 cms. per sec. | | Na 45 " " | | Li 36 " " | | NH4 66 " " | | H 320 " " | | Ag 57 " " | | Cl 69 " " | | I 69 " " | | NO3 64 " " | | OH 162 " " | | C2H3O2 36 " " | | C3H5O2 33 " " | +------------------------------------+