Original scientific paper

Solubilities of Tetraphenylphosphonium and Tetraphenylarsonium Perchlorate and Gravimetric Perchlorate Determination

M. Široki ; Laboratory of Analytical Chemi stry, Faculty of Natural Sciences and Mathematics, University of Zagreb, 41000 Zagreb, Croatia, Yugoslavia
V . Cesar ; Laboratory of Analytical Chemi stry, Faculty of Natural Sciences and Mathematics, University of Zagreb, 41000 Zagreb, Croatia, Yugoslavia

Abstract

The solubilities of tetraphenylphosphonium and tetraphenylarsonium
perchlorate in water were determined at various temperatures,
between 5 °c and 100 °c. Tetraphenylphosphonium perchlorate
is slightly less soluble than tetraphenylarsonium perchlorate.
The concentrations of these substances in saturated
solution at 20 °c are (5.2 ± 0.1) x 10-5 and (5.6 ± 0.1) x 10-5 mol dm-3,
respectively. The solubilities in aqueous sodium chloride and
sodium sulfate at 20 °c were determined over a wide range of salt
concentrations.
Gravimetric determination of perchlorate with tetraphenylphosphonium
chloride on micro and semimicro scale is described.
The details of the procedure are given and possible sources of
error are discussed.

Keywords

Hrčak ID:

196336

URI

https://hrcak.srce.hr/196336

Publication date:

20.7.1977.

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