Russian Journal of Inorganic Chemistry, Tập 4,Trang 1-658Chemical Society., 1959 |
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Trang 87
... pentoxide in hydrofluoric acid , where the main chemical reactions between the constituents are in- dicated . This portion approximates to a straight line , and the fluorine to niobium ratio must be regarded as constant . It remains ...
... pentoxide in hydrofluoric acid , where the main chemical reactions between the constituents are in- dicated . This portion approximates to a straight line , and the fluorine to niobium ratio must be regarded as constant . It remains ...
Trang 210
... pentoxide , which he thought were acid hydrates of tantalum fluoride . Rose ' found 68.2 % of Ta2Os in a crystal- line solid obtained similarly and inferred the existence of a basic salt containing tantalum fluoride and the hydrated ...
... pentoxide , which he thought were acid hydrates of tantalum fluoride . Rose ' found 68.2 % of Ta2Os in a crystal- line solid obtained similarly and inferred the existence of a basic salt containing tantalum fluoride and the hydrated ...
Trang 216
... pentoxide pre- cipitated from solution with HCl below 60 ° . The niobic acid was washed twice with distilled water ( freed from chloride ) and dried to constant weight in a vacuum desiccator over sulphuric acid ( sp . gr . 1.84 ) . The ...
... pentoxide pre- cipitated from solution with HCl below 60 ° . The niobic acid was washed twice with distilled water ( freed from chloride ) and dried to constant weight in a vacuum desiccator over sulphuric acid ( sp . gr . 1.84 ) . The ...
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Journal | 1 |
II Removal | 11 |
The polarographic behaviour of gallium | 18 |
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acid Akad alcohol alizarin alkali alloys ammonia analysis anion anorg aqueous solutions atoms benzene bonds CaCl2 CaF2 calcium calculated carbon cerium Chem chemical chloride cobalt complex composition compounds concentration constant containing corresponding crystallisation crystals curve decomposition determined diagram diborane dissolved electrical conductivity electrons energy equation equilibrium ether eutectic experimental fluoride formation formed H₂O heating hydrated hydrofluoric acid hydrogen peroxide hydrolysis hydroxide increase ionic strength ions iridium isotherm kcal Khim KNO₂ lanthanum LiOH liquid phase lithium lithium hydride melting metal method mixture Mohr's salt mole molecules molybdenum NaOH Nauk SSSR Neorg niobium Obshch obtained oxalate oxidation oxidising oxygen pentoxide peroxymolybdate phosphotungstic acid platinum potassium precipitate ratio reaction salt saturated shows sodium solid phase solid solutions solu solubility studied sulphate sulphur Table tantalum temperature ternary Thermogram tion titanium titration uranyl nitrate valency values X-ray yttrium Zhur