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Activity Product Constant of Barium Rhodizonate
Author(s) -
Pan Kuan,
Chou TziShan,
Huang TehShoon
Publication year - 1966
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.196600012
Subject(s) - chemistry , polarography , titration , barium , barium chloride , solubility equilibrium , inorganic chemistry , electrolyte , solubility , analytical chemistry (journal) , chromatography , electrode
Electrolytic behavior of rhodizonic acid (H 2 Q) was polarographically studied in a series of acetate buffers and ammonium buffers of various p R values at 20°, 25°, 30° and 35°. Two well‐defined waves were observed in the p H range of 1∼5 and 8∼9.4, but only one wave was observed in the p H range of 5.5∼7.0. Polarographic and conductometric titrations of rhodizonate with barium chloride and the reverse titration indicate the formation of BaQ. Solubility product constant K sp and activity product constant K o of BaQ were evaluated from the polarographic data at various temperatures, and were found to be log and log