Notes for students in chemistry : being a syllabus of chemistry compiled mainly from the manuals of Fownes-Watts, Miller, Wurz, and Schorlemmer / by Albert James Bernays.

Albert Bernays

Date:: 1878

Credit: Notes for students in chemistry : being a syllabus of chemistry compiled mainly from the manuals of Fownes-Watts, Miller, Wurz, and Schorlemmer / by Albert James Bernays. Source: Wellcome Collection.

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$from AMMONIUM META-VANADATE VO,OH.,N by heat. VanacH- nite 3(V0j)„Pb,,Cl„Pb is isomorphoiis with Pyromorphite BCPOJoPbj.PbCi.,. V and CI. CI3V, in shining tables, of peach- blossom color. ' By 01,V, 01 is evolved, and OI3V is ob- tained. Cl^V from 2CI3V + H, through red-hot tube. J and N. VN. VNo. By heating VN to redness in a cui-rent of 01, Cl^V is obtained.] [XXXIV. Niobium or Columbium Nb = 94. Tetrad element, never native. Found by Hatchett in 1801 in Oolumbite. In its affinities, resembles Phosphorus. Niobic ANHYDRIDE Nb^O^. OuLORlDE Cl^Nb. FLUORIDE F^Nb. OxT- TLUoraDE FaONb.] [XXXV. Tantalum Ta = 182. Pentad metal, not native. In Tantalite and Yttro-tan- talite by Elieberg bLVJ.'.uu '^J O TANTALIC FLUORIDE iFK.FsTa.J TaNTALIO ANHYDRIDE Ta^Oj. POTASSIUM Plumbum Thallium Cuprum [Gallium [Indium SymboL At. weight. Sp. gr. Pb = 207.0 . 11.380 Tl = 203.6 11.862 Cu = 63-4 • 8.952 G = 68.0 . 5.900 In = II3-4 • 7.400 Fusing-point. 325°. c. 2 94°. C. 1091°. c. 3o°.i C] 176''. C] XXXVI. Plumbum or lead Pb = 207. Dyad and tetrad metal, never native. Bluish, soft, malle- able, ductile, but little tenacious. Sp. gr. 11.38. Fuses at 32=,° 0. Tarnishes slightly in damp air. Acted upon by soft water in presence of air and carbonic acid, crystals of C002Pb,(OH)2['b being precipitated. Chlorides and nitrites in water'also attack lead. Presence of sulphates in water best defence against lead-poisoning by water. Acidulated, no water fit to drink which darkens in the least degiee on addition of SH Lead oxydizes when melted. Dilute SO,H„. and CIH scarcely act. NO„OH best solvent : 3?^ -I- 8N0„0H = 3[(N02)20,Pb]-f 40H„+2NO. Alloys, see Stannum, p. 6r. Oxides : 4 known. One basic, i. Suboxide Pb.O, black. 2. Le.\d OXIDE or plumbic oxide PbO = 223. Powerful basic oxide. Yellow color. Litharge is fused oxide, Massicot uiifused oxide. By the nxydatiou of lead in a current of air. Hydrate 2PbO,OIl2 is white, nUialine to test-paper, as slightly soluble, and soluble in HOK: good test for Sulphur. 3- Minium or BED LEAD, a Compound of 2PbO,PbO„ is found native. Used as$