Russian Journal of Inorganic Chemistry, Tập 13,Trang 1-901British Library Lending Division with the cooperation of the Royal Society of Chemistry, 1968 |
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Trang 337
... niobium selenite , on which there is very little information . A qualitative report by Schw- arz1 states that niobium selenite separates from mineral acid solutions . Niobium is precipitated quantitatively by selenous acid from a ...
... niobium selenite , on which there is very little information . A qualitative report by Schw- arz1 states that niobium selenite separates from mineral acid solutions . Niobium is precipitated quantitatively by selenous acid from a ...
Trang 338
... niobium is precipitated completely in 1 N HCl , to the extent of 93.5 % in 4 N HCl , and to the extent of 78.0 % in 6 N HCl . With increase in n at constant acidity , the Nb : Se ratio in the selenite first decreases and then becomes ...
... niobium is precipitated completely in 1 N HCl , to the extent of 93.5 % in 4 N HCl , and to the extent of 78.0 % in 6 N HCl . With increase in n at constant acidity , the Nb : Se ratio in the selenite first decreases and then becomes ...
Trang 339
... niobium selenites gradually decompose with the liberation of ele- mental selenium . Dams and Hoste suggest that selenous acid catalyses the precipitation of niobium from nitrate - containing and ammonia - containing peroxide solutions ...
... niobium selenites gradually decompose with the liberation of ele- mental selenium . Dams and Hoste suggest that selenous acid catalyses the precipitation of niobium from nitrate - containing and ammonia - containing peroxide solutions ...
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INORGANIC | 1 |
Influence of sodium chloride on cation exchange in | 124 |
The potassium difluorophosphatewater system | 131 |
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absorption bands absorption spectra acid solutions Akad alkali metal amine ammonia ammonium analysis anhydrous anion aqueous solutions atoms bond bromide caesium calculated carbonate cation cerium(IV Chem chemical Chemistry chloride cm-¹ cobalt complex formation composition compounds concentration coordination corresponding crystallisation crystals curve decomposition decrease determined displacement dissociation endothermic endothermic effect equilibrium erbium extraction Figure formed frequencies groups H₂O hafnium heating hydrated hydrochloric acid hydrogen hydroxide increase infrared infrared absorption spectra infrared spectra Inorg ionic ions iron(III kcal Khim lanthanum ligand liquid method mixture mole molecules molybdenum Moscow Nauk SSSR neodymium Neorg nickel niobium nitrate obtained oxalate oxide perchlorate perchloric acid phenanthroline plexes potassium precipitate prepared pyridine range reaction reagent Russ salt shows sodium solid phase solu solubility specimens spectrum structure studied sulphate sulphuric acid Table tantalum temperature tetrahydroborates thermal tion values X-ray diffraction Zhur zirconium