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absorption acid added addition Akad alcohol alkali alloys ammonia ammonium analysis anion aqueous atom bismuth bond calculated carbonate Chem chemical chloride complex composition compounds concentration conductivity confirmed constant containing coordination corresponding crystallisation crystals curve decomposition decrease density dependence determined diagram dissolved effect equilibrium excess experiments formation formed given gives H₂O heating hydrogen hydroxide increase indices initial ions Khim lines liquid measured melting metal method mixture molar mole molecules Nauk SSSR Neorg nitrate observed obtained optical oxide phase platinum potassium precipitate prepared presence pressure properties pure quantity ratio reaction Received reduction refractive region salt separated shown shows sodium solid solutions solubility solution solvent specimens stability structure studied substance sulphate Table temperature thermal tion uranium values volume washed X-ray yield Zhur