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Thermometric Studies of Multi‐Valent Metal Complexes
Author(s) -
Hsin ShuChing,
Huang TehShoon
Publication year - 1974
Publication title -
journal of the chinese chemical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.329
H-Index - 45
eISSN - 2192-6549
pISSN - 0009-4536
DOI - 10.1002/jccs.197400005
Subject(s) - chemistry , perchlorate , lanthanum , sulfate , rhodium , inorganic chemistry , chloride , uranium , perchloric acid , uranyl , metal , nuclear chemistry , platinum , titanium , ion , metallurgy , organic chemistry , catalysis , materials science
Thermometric titrations of lanthanum perchlorate, titanium (III)‐chloride, uranium (IV)‐sulfate, and uranyl sulfate with EDTA solutions were carried out by using a Keithley nanovoltmeter with a rhodium‐platinum thermocouple at 25°±0.01°. The formation of LaY − , TiY − , U(IV)Y and UO 2 HY − ions was confirmed. The heat of reaction for the system, Ti(III)+H 2 Y 2− = TiY − +2H + , was given by δH 1 = 1.933‐1.422×10 m +2.056×10 4 m (in cal) and the limiting value was evaluated to be δH° 1 = 1.9 kcal mol −1 at 25° C .