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KINETICS OF THE OXIDATION OF MERCAPTOSUCCINIC ACID BY METHYLENE BLUE CATALYSED BY COPPER IN PRESENCE OF Ru(III) IN ACIDIC MEDIUM

  • Unique Paper ID: 170142
  • Volume: 11
  • Issue: 6
  • PageNo: 3478-3482
  • Abstract:
  • Kinetics of the oxidation of mercaptosuccinic acid by methylene blue ,the environmental factor considerably affect the reactivity by transition metal likeCu(II)in presence of Ru(III). Kinetic feature are very much different in presence of Cu(II) alone and Cu(II),Ru(III) simultaneously).In presence of Cu(II) alone the order follows first order kinetics with respect to methylene blue but on adding Ru(III) along with Cu(II), the order in MB changes to ½ under aerobic condition.We measure sample runs in aerobic and anaerobic condition.Dissolve oxygen in reaction mixture influence the order of reaction.The order is unity in TMA and in MB is fractional. The rate almost constant on increasing [H+] .The rate show positive effect of [Cu(II)], at higher [Cu(II)]rate changes from half to one and dependency unity to half .The slightly increases on increasing [Ru(III)]and show fractional dependency.The increase in dielectric constant rate increases, the variation in ionic strength with KCl,NaCl,KNO3K2SO4,rate decreases but withNaCl,KNO3and K2SO4 show transition from first order to zero order. The stoichiometry is found to be 2:1 between TMA and MB. The addition addition of oxidised product and leuco base slightly increases the rate .The activation parameter evaluated on increasing temperature ,rate decreases but at higher temperature the rate constant slightly increases, this shows anti-Arrhenius behaviour of the reaction.
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Cite This Article

  • ISSN: 2349-6002
  • Volume: 11
  • Issue: 6
  • PageNo: 3478-3482

KINETICS OF THE OXIDATION OF MERCAPTOSUCCINIC ACID BY METHYLENE BLUE CATALYSED BY COPPER IN PRESENCE OF Ru(III) IN ACIDIC MEDIUM

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