Wyniki wyszukiwania - BazTech

Ograniczanie wyników

1 Polish Journal of Chemistry

1 2002

Znaleziono wyników: 1

Liczba wyników na stronie

Wyniki wyszukiwania

Wyszukiwano:
w słowach kluczowych: redox kinetics

Sortuj według:

Ogranicz wyniki do:

Influence of 5-Sulphosalicyclic Acid on Redox Reaction between Fe(III) and Sn(II)

Pautieniene V., Rozovskis G., Survila A.

Polish Journal of Chemistry

2002

Vol. 76 / nr 1

103-110

Kinetics of Fe(III) reduction with Sn(II) in 0.5-2 M H2SO4 solutions involving sulphosalicylic acid (H3Ssal) has been studied. H3Ssal acts not only as an indicator for spectrophotometric determination of Fe(III) but also takes part in the redox reaction as an accelerator. The data are described by the kinetic equation obtained for the ratedetermining step of FeSsal + Sn2+_Fe2+ + Sn3+ + Ssal3- with rate constant k2 _ 1.4_10-4 M-1 s-1 at 60_C. Effect of fluoride consists in the decrease of FeSsal concentration, due to the formation of extra Fe(III)-fluoride complexes, resulting in the decrease of the reaction rate.