Summary
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1.
A method has been proposed for the determination of the differences between the total energies of isomeric platinum chloroammines.
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2.
A hermetic calorimeter for liquids, having constant heat exchange and permitting measurements to be taken from room temperature to 100–120°, has been constructed. The thermometer of the calorimeter has a sensitivity of the order of 5 · 10−6. The calorimetric sensitivity of the apparatus is 1.5 · 10−8 cal. The amount of complex compound required for the measurement is 0.1 – 0.3 g.
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Measurements have been made of the heats of reaction of five chloroammines of bivalent platinum with aqueous ammonia (9.4% NH2) at 70°, the probable error being about 1%. The heats of four isomeric changes have been estimated (probable error about 10%).
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Chernyaev, I.I., Palkin, V.A. & Sokolov, V.A. Thermochemical investigation of isomeric platinum compounds. Russ Chem Bull 2, 193–197 (1953). https://doi.org/10.1007/BF01170984
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DOI: https://doi.org/10.1007/BF01170984