Observations on the rare earths : yttrium chloride and the atomic weight of yttrium . -15- TABLE II 0 b 16 Y203 ! Y2(S04)3 S = 32,07 No Weight ofOxide Weight ofSulphate AtomicWeight 1 2 .87756 3 .20640 .42557 4 ,19823 .40993 5 .26409 .54237 6 .36243 .74383 7 .34745 .71295 8 .28690 .58787 9 .22910 ,47098 10 .27464 .56434 11 .18760 .38580 Solubility of the Sulphatein Water. (Partially insoluble) (Partially insoluble)(Small, insoluble residue)(Small, insoluble residue). -16- PREPARATION OF YTTRIUM CHLORIDE.
Observations on the rare earths : yttrium chloride and the atomic weight of yttrium . -15- TABLE II 0 b 16 Y203 ! Y2(S04)3 S = 32,07 No Weight ofOxide Weight ofSulphate AtomicWeight 1 2 .87756 3 .20640 .42557 4 ,19823 .40993 5 .26409 .54237 6 .36243 .74383 7 .34745 .71295 8 .28690 .58787 9 .22910 ,47098 10 .27464 .56434 11 .18760 .38580 Solubility of the Sulphatein Water. (Partially insoluble) (Partially insoluble)(Small, insoluble residue)(Small, insoluble residue). -16- PREPARATION OF YTTRIUM oxide was dissolved in twenty per cent, hydrochloric aoici whioh hadbeen redistilled through Jena glass of good quality, the middle fraotions onlybeing taken. The solution was filtered and evaporated until the salt crystal-ized on oooling. This was then orystaiized several times from conductivity wa-^ter, the mother liquor in each case being drained off thoroughly by means of aoentrifugal machine. The chloride was pure white and formed in small brilliantcrystals. They were powdered in an agate mortar and kept in a vaouum desiooa- 26 ) tor over concentrated sulphuric aoid. Aocording to Matignon the salt orys- o tallizes with six molecules of water and fuses at 160 but loses five mole- o oules of its water of hydration at 110 . 26 ) Dehydration of the Yttrium prepared the anhydrouschloride by heating the hydrate in a current of dry hydroohloric acid gas at 0 27 ) 0 180 . He desoribes the anhydrous chloride as fusing at about 68
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Keywords: ., bookcentury1900, bookdecade1910, booksubjecttheses, bookyear1912
