Journal . is necessary:—(1.) to employ thereagent in excess ; (2.) to avoid too great an excess ofnitric acid J (3.) to avoid especially the presence of hydro-chloric and sulphuric acids. The precipitate obtained issoluble in alcohol, is decomposed by alkalis, and de-colourised by silver nitrate.—J. W. L. An Improved Decompositiim and Absorption Apparatus. Is Fig. 1, A, is what is called a cooler-flask (Kuhlerkolben), , a flask (capable of holding 200—1,000 cc.) providedwith a neck 350 mm. long and 16 mm. wide, which is sur-rounded by a suitable condenser B. These flasks all have •the sam
Journal . is necessary:—(1.) to employ thereagent in excess ; (2.) to avoid too great an excess ofnitric acid J (3.) to avoid especially the presence of hydro-chloric and sulphuric acids. The precipitate obtained issoluble in alcohol, is decomposed by alkalis, and de-colourised by silver nitrate.—J. W. L. An Improved Decompositiim and Absorption Apparatus. Is Fig. 1, A, is what is called a cooler-flask (Kuhlerkolben), , a flask (capable of holding 200—1,000 cc.) providedwith a neck 350 mm. long and 16 mm. wide, which is sur-rounded by a suitable condenser B. These flasks all have •the same width of neck so that they all fit into the same Fig. W. Thomer. Zeits. f. angew. C!hem. 1888, 487—488. condenser. This condenser-flask is fixed into a suitablestand and the mouth of the flask is closed with a doubly-perforated india-rubber stopper. Oue of these perforationsis provided with a tube C, which ends just below the stopper,and connects the flask with the absorption apparatus E. D Fig
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectchemist, bookyear1882
