Chromic acid oxidation of oxalic acid catalysed by manganese(II) - Kinetic method of estimation of manganese(II) and water soluble and extractable manganese in soil

Department of Chemistry, S.R.V.B.S.J.B.M.R. College, Peddapuram-533 437. East Godavari

Dt., Andhra Pradesh. India

Manuscript received 22 February 2008. accepted 15 April 2008

The catalytic effect of manganese(II) on the oxidation of oxalic acid by chromic acid has been pressed into use for its determination. A simple kinetic method has been developed using fixed time and iodometric procedures. The method is found to be suitable for the estimation of water soluble and exchangeable manganese in soil and the results have been compared with those of Atomic Absorption Spectrophotometer (AAS).