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

• Autorzy: Pautieniene V. , Rozovskis G. , Survila A.
• Języki publikacji: EN

Abstrakty

EN

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.

Słowa kluczowe

EN

iron(III); sulphosalicyclic acid complexes; tin(II); redox kinetics

• Wydawca: Polskie Towarzystwo Chemiczne
• Czasopismo: Polish Journal of Chemistry
• Rocznik: 2002
• Tom: Vol. 76 / nr 1
• Strony: 103--110
• Opis fizyczny: Bibliogr. 11 poz., rys.

Twórcy

autor

Pautieniene V.

• Institute of Chemistry, A. Goštauto 9, Vilnius LT-2600, Lithuania

autor

Rozovskis G.

• Institute of Chemistry, A. Goštauto 9, Vilnius LT-2600, Lithuania

autor

Survila A.

• Institute of Chemistry, A. Goštauto 9, Vilnius LT-2600, Lithuania

Bibliografia

• 1. Noyes A.A., Z. Phys. Chem,, 16, 546 (1895).
• 2. Weis J„ J Chem. Soc., 309 (1944).
• 3. Duke F.R. and Pinkerton R.C., J. Am. Chem. Soc., 73, 3045 (1951).
• 4. Scot P.D., Glasser D. and Nikol M.J., J. Chem. Soc. Farad. Trans. 71, 1413 (1975).
• 5. Benson S. W., The Foundations of Chemical Kinetics, Me Grow-Hill Book Company, Inc., 1960.
• 6. Ayres G.H. and Alsop J.H., Anal. Chem., 31, 1135 (1959).
• 7. Ayres G.H. and Meyer A.S., Anal. Chem., 23,299 (1951).
• 8. Sillen L.G. and Martel A.E., Stability Constants of Metal-lon Complexes, Spec. Publications 17 and 25, London, 1 (1964), 2 (1971).
• 9. Kalinina V.E. and Kosyakova A.S., Izv. VUZKhim. i khim. tekhn., 15, 1316 (1972) (in Russian).
• 10. Kolthoff I. M., Belcher R., Stenger V.A. and Matsuyama G., Volumetric Analysis 3, NY 1957.
• 11. Beck M.T., Chemistry of Complex Equilibria, Akademiai Kiado, Budapest, 1970, p. 285