Journal . olution, the whole is gently warmed, and a current of 0-1volt passed through 06—08 grs. of thallium (adheringfirmly to the cathode) separate out in seven hours. Towash the flask and the thallium without allowing the latterto come in contact with air, the arrangement shown inFig. 2 is resorted to, by which means water is run in atthe top of the flask as quickly as the contents of the latterore syphoned out at the bottom. One advantage of thisarrangement is that the current can be kept going duringthe washing process. One litre of water is sufiBcient forwashing purposes. The water is t
Journal . olution, the whole is gently warmed, and a current of 0-1volt passed through 06—08 grs. of thallium (adheringfirmly to the cathode) separate out in seven hours. Towash the flask and the thallium without allowing the latterto come in contact with air, the arrangement shown inFig. 2 is resorted to, by which means water is run in atthe top of the flask as quickly as the contents of the latterore syphoned out at the bottom. One advantage of thisarrangement is that the current can be kept going duringthe washing process. One litre of water is sufiBcient forwashing purposes. The water is then boiled for a shorttime to drive out gases adhering to the electrodes, and theflask is then connected mth a hydrometer, Fig. 1 (seealso Zeit. f. Anal. Cbcm., 1887, 531), acid is run iu and the hydrogen evolved, on the thallium dissolving it ii col-lected in thc< hydrometer and read off and asthallium. With care, accurate results (within 0-2 percent.) arc obtained.—F. W. T. K. iiff. Fig. 2.
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectchemist, bookyear1882
