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Journal of the Korean Chemical Society (JKCS)

ISSN 1017-2548(Print)
ISSN 2234-8530(Online)
Volume 9, Number 2
April 20, 1965 

Polarographic Study of Titanium Oxalato and Oxalatous Complex

Polarography에 의한 Titanium Oxalato 및 Oxalatous Complex에 관한 연구
Hwang Am Kim, Dong Jin Han

김황암, 한동진
Reduction of Ti(Ⅳ)-oxalate complex on dropping mercury electrode has been studied as a function of oxalate concentration and of pH varied with HCl. Assuming there are equilibrium TiO(C2O4)2= + 2H+ = Ti+4 + 2C2O4= + H2O K4 in addition to TiO(C2O4)2= = TiO++ + 2C2O4= K2 Ti(C2O4)2- = Ti+3 + 2C2O4= K3 in the system cathodic wave has been well explained for that pH is higher than 0.5. The equilibrium constants K2, K3 and K4 have been to be 2 × 10-12, 5 × 10-13 and 10-11, respectively. The reduction of Ti(Ⅳ)-oxalate system is Ti+4 + e → Ti+3 in the concentration of hydrochloric acid, higher than 3M.
71 - 74
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