Russian Journal of Inorganic Chemistry, Tập 4,Trang 1-658Chemical Society., 1959 |
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Kết quả 1-3 trong 14
Trang 259
... phosphotungstic acid ( 4 % solution ) at 50 ° . 5 ml of con- centrated HCl was added and the solution evaporated to half its volume . The first fraction ( 156.5 g of crystals ) was shown by analysis to be the dibarium salt ( Table 3 ...
... phosphotungstic acid ( 4 % solution ) at 50 ° . 5 ml of con- centrated HCl was added and the solution evaporated to half its volume . The first fraction ( 156.5 g of crystals ) was shown by analysis to be the dibarium salt ( Table 3 ...
Trang 377
... PHOSPHOTUNGSTIC ACIDS IN STRONGLY ACID MEDIA Vikt . I. Spitsyn and P. Ya . Matyazh The saturated heteropoly - anions are stable only in acid media ; as the pH is increased they are first converted to unsaturated compounds , and finally ...
... PHOSPHOTUNGSTIC ACIDS IN STRONGLY ACID MEDIA Vikt . I. Spitsyn and P. Ya . Matyazh The saturated heteropoly - anions are stable only in acid media ; as the pH is increased they are first converted to unsaturated compounds , and finally ...
Trang 379
... acids with complex - forming anions capable of forming heteropoly - compounds was observed by treating phosphotungstic acid with phosphoric , silicic and boric acids . Kehrmann " showed phosphotungstic acid to be con- verted to the luteo - ...
... acids with complex - forming anions capable of forming heteropoly - compounds was observed by treating phosphotungstic acid with phosphoric , silicic and boric acids . Kehrmann " showed phosphotungstic acid to be con- verted to the luteo - ...
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The 21st Congress of the CPSU | 1 |
Reduction of TiO2 | 7 |
S A SHCHUKAREV I V VASILKOVA V M DROZDOVA | 13 |
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absorption acid Akad alcohol alizarin alkali alloys ammonia analysis anhydrous anion anorg aqueous solutions atoms bonds CaCl2 CaF2 calcium calculated carbon cerium Chem chemical chloride cobalt complex components composition compounds concentration containing corresponding crystallisation crystals curves decomposition determined diagram dissolved electron equation equilibrium ether eutectic experimental fluoride formation formed glaserite H₂O heating hydrated hydrofluoric acid hydrogen hydrolysis hydroxide increase ionic ions isotherm K₁ kcal Khim lanthanum LiOH liquid phase lithium melting metal method mixture molar mole molecules molybdate molybdenum MoO4 NaCl NaOH Nauk SSSR Neorg niobium Obshch obtained optical density oxalate oxide oxygen perchloric acid peroxide peroxymolybdate phosphotungstic phosphotungstic acid platinum potassium precipitate ratio reaction salt saturated shows sodium solid phase solid solution solu solubility solvent studied sulphate sulphuric Table tantalum tellurium temperature ternary thermal tion titanium titration values vapour X-ray yttrium Zhur zirconium