Journal :   Asian Journal of Research in Chemistry

Volume No. :   10

Issue No. :  3

Year :  2017

Pages :   251-258

ISSN Print :  0974-4169

ISSN Online :  0974-4150


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Kinetics of isoamyl alcohol and aniline inhibited uncatalysed and Ag (I) catalysed autoxidation of S (IV) in acidic Medium



Address:   A. K. Sharma1*, R. Sharma2, D. S. N. Prasad1
1Department of Chemistry, Govt. P. G. College, Jhalawar- 326001, Rajasthan (India)
2Department of Chemistry, S.P.C. Govt. College, Ajmer- 305001, Rajasthan (India)
*Corresponding Author
DOI No: 10.5958/0974-4150.2017.00040.2

ABSTRACT:
In this paper we report that isoamyl alcohol and aniline are good inhibitor for SO2 oxidation in pH range 4.02-5.25 in the presence of Ag(I). Based on the observed results following rate law given and a free radical mechanism has been proposed. d[S(lV)]/dt = (k1+ k2[Ag(I)]) [S(lV)]/1 + B [Organics] Experiments were carried out at 30=T°C=40, 4.02=pH=5.25, 1×10-3 mol/cm3= [S(lV)=10×10-3 mol/cm3, 5×10-6 mol/cm3=[Ag(I)]=2.5×10-5 mol/cm3, 5×10-7 mol/cm3=[ Isoamyl alcohol]=8×10-3 mol/cm3,5×10-7 mol/cm3=[ Aniline]=3×10-4 mol/cm3 . Rate constants and order of reaction were calculated and found pseudo- first order in all cases. The effect of pH and temperature were also discussed. The value of apparent energy were found as 45.16 kJ mol-1 and 26.43 kJ mol-1in the presence of isoamyl alcohol and aniline respectively.
KEYWORDS:
Kinetics; Autoxidation; SO2; Ag(I); Catalysis; Inhibition ; Isoamyl alcohol, aniline.
Cite:
A. K. Sharma, R. Sharma, D. S. N. Prasad. Kinetics of isoamyl alcohol and aniline inhibited uncatalysed and Ag (I) catalysed autoxidation of S (IV) in acidic Medium. Asian J. Research Chem. 2017; 10(3):251-258.
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