Russian Journal of Inorganic Chemistry, Tập 22Chemical Society., 1977 |
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The heating curve of " chemically pure " grade crystal- line potassium metaphosphate showed three endothermic effects . The first two at 460 ° C and 656 ° C correspond to polymorphic transformations of potassium metaphosphate , and the ...
The heating curve of " chemically pure " grade crystal- line potassium metaphosphate showed three endothermic effects . The first two at 460 ° C and 656 ° C correspond to polymorphic transformations of potassium metaphosphate , and the ...
Trang 31
... heating 410 320 860 DTA 1 320 420 Table 2 . various phosphates . 2 DTGA 400 590 725 Composition of specimens 100 360 2 Heating tem . , ° C 365 600 860 680 960 TGA 5 % Complexone III solution , duration of contact 90 h Method of ...
... heating 410 320 860 DTA 1 320 420 Table 2 . various phosphates . 2 DTGA 400 590 725 Composition of specimens 100 360 2 Heating tem . , ° C 365 600 860 680 960 TGA 5 % Complexone III solution , duration of contact 90 h Method of ...
Trang 493
... heat- ing Cu2O . Temp . of heating , ° C Duration of heating , h Colour of specimen Presence of CuO " Cu , O Å 25 25 210 220 255 300 8 00 red 1123456 1234 123 0.5 brown dark brown ditto dark brown ditto no no no black no ditto no no ...
... heat- ing Cu2O . Temp . of heating , ° C Duration of heating , h Colour of specimen Presence of CuO " Cu , O Å 25 25 210 220 255 300 8 00 red 1123456 1234 123 0.5 brown dark brown ditto dark brown ditto no no no black no ditto no no ...
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COORDINATION equalisation of the electronegativities | 13 |
Preparation and some properties of tungsten | 13 |
equilibrium conditions | 13 |
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1975 Translated absorption bands absorption spectra acid Akad alkali metal ammonium analysis anion aqueous solutions atoms bond bromine calculated cations Chem chemical Chemistry chloride cm-¹ cm¹ complexes components composition compounds concentration coordination copper(II corresponding crystallisation crystals curve decomposition decrease dehydration determined electron endothermic endothermic effect equilibrium diagram ethanol eutectic experimental extraction Figure formation formed H₂O hafnium heating hydrogen hydrolysis hydroxide infrared infrared spectra Inorg interaction investigated ions iron(III isotherm kcal Khim Khimiya lanthanide lanthanum ligand lithium melts metaphosphates method mixture mole molecules Moscow Nauk SSSR Neorg nickel(II nitrate obtained optical density oxide oxygen phosphate potassium praseodymium precipitate protons range ratio reaction Russ salts shows sodium solid phase solid solutions solubility specimens spectrum stability constants structure studied sulphate Table temperature thermal tion Translated from Zhurnal vanadium(III vibrations wavenumbers X-ray diffraction X-ray diffraction patterns Zhur Zhurnal Neorganicheskoi Khimii