The Complex Formation of Ferric Ions with Chloride Ions - The Journal

The Complex Formation of Ferric Ions with Chloride Ions. Max. Møller. J. Phys. Chem. , 1937, 41 (8), pp 1123–1128. DOI: 10.1021/j150386a010. Publicati...
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T H E COMPLEX FORMATION O F FERRIC IONS WITH CHLORIDE IONS 3IAS hIOLLEK

Division o j Quantzlatiue d n a l y s i s . Department

o f Inorganzc Chewkistry, Royal f'olijlechnzc I n s t i t u t e , Copenhagen, Denmark

Keceiwri .4 pi-il 6. 1937 I. ISTRODUCTIOIV

The redox potential ferric-ferrous ion has been investigated by Peters (7), Fredenhagen (2), Maitland ( 5 ) , Noyes and Brann (6), and Popoff and Kunz (8). In nitrate solutions Maitland ( 5 ) has found the value 0.464 volt for the standard potential measured against the 1 N potassium chloride-calomel electrode. By adding 0.2831 volt (Bjerrum and Cnmack (1)) the potential against the one-normal activity hydrogen electrode is obtained. Maitland's value of the standard potential thus is Eo = 0.7471 volt. For the same quantity Soyes and Brann have found the value Eo = 0.7467 volt, while Popoff and I