. Journal . in the constricted end of the glass tube uiin the absorption apparatus. Fig. To determine the arsenic in the ash, this is shaken 0into a Wurtzrlask, A,of 10O capacity, which is attachby means of ground-glass joints as shown in Figsmall reflux condenser, li, connected with ..about 7it capacity, containing about 10 of arseofree hydrochloric acid (sp. gr. 1-1). Into the rlask,containing the coal ash. -J., of arsenic-free hydrochlmacid, containing 025 of bromine, are added by mmof the ground-in tap-funnel, D. The contents of the tinare kept at a gentle ebul
. Journal . in the constricted end of the glass tube uiin the absorption apparatus. Fig. To determine the arsenic in the ash, this is shaken 0into a Wurtzrlask, A,of 10O capacity, which is attachby means of ground-glass joints as shown in Figsmall reflux condenser, li, connected with ..about 7it capacity, containing about 10 of arseofree hydrochloric acid (sp. gr. 1-1). Into the rlask,containing the coal ash. -J., of arsenic-free hydrochlmacid, containing 025 of bromine, are added by mmof the ground-in tap-funnel, D. The contents of the tinare kept at a gentle ebullition for about two hours. Aftcooling, about a gram of potassium metabisulphite is addand the liquid again heated until the free bromine disappeaiThe solution is filtered from the suspended silica and tfilter washed with the acid contained in the small flask,The filtered solution is returned to the distilling rconnected with the reflux condenser, and boiled to expel Isulphurous acid. The condenser is then reversedliquid distilled into the flask, (, until the residue in :flask, A, is syr
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectchemist, bookyear1882
