Browsing by Author "Ramanjaneyulu, J.V.S."
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Item Catalysis of hydrogen peroxide hydriodic acid reaction by tungstate ions(2011-11-22T06:22:37Z) Ramanjaneyulu, J.V.S.; Shukla, B.K.Item Inorganic complexes in volumetric analysis - part I Use of ferric oxalae complex in the estimation of iodide(2011-11-22T07:13:07Z) Ramanjaneyulu, J.V.S.; Shukla, B.K.The formation of inorganic complexes in solution has been made use of both in the qualitative and quantitative analysis. Chemical literature affords numerous instances in which this phenomenon of complex formation has been used in analytical chemisty both in the formulation of analytical procedures as well as in the separation of elements of in the formation of coloured compounds used as indicators. This paper described the use of ferric oxalate complex in the formulation of a new method for the estimation of iodides.Item Inorganic complexes in volumetric analysis - part II Use of phosphate complex in the estimation of iodide(2011-11-22T07:33:55Z) Ramanjaneyulu, J.V.S.; Shukla, B.K.In part I of this series was described the formulation of a new method of estimation of iodide, using ferric oxalate complex. In this paper it is shown that ferric phosphate complex could be successfully used in place of the ferric oxalate complex in the above method with excellent results.Item Inorganic complexes in volumetric analysis. part III. use of ferric fluoride complex in the estimation of iodide(2011-11-25T05:08:55Z) Ramanjaneyulu, J.V.S.; Shukla, B.K.Effect of varying the concentration of sodium fluoride This shows that amount of sodium fluoride most be about 15-20 times that the amount of ferric iron for forming the stable complex, which does not break within half an hour when the overall acid concentration is 0.32 N and overall iodide concentration is 0.01 N.Item Iodized salt(2011-11-30T06:56:31Z) Ramanjaneyulu, J.V.S.; Shukla, B.K.Item A New Method of Estimation of Iodides(2011-11-22T06:52:45Z) Ramanjaneyulu, J.V.S.; Shukla, B.K.The Reaction Between Chromic Acid and hydriodic acid has been employed in devising a method for the estimation of iodides in iodized salt. This reaction is show at low concentrations of dichromate (0.01-0.001N) but is catalysed by oxalate ions1. scince this reaction is stoichiometric with respect to both chromate and iodide, iodine is quantitatively liberated,if chromate is taken in excess. The excess dichromate is reduced by the addition of excess of ferrous ammonium sulphate and the ferric iron formed is removed by the addition of a large excess of oxalate2 which also catalyses the reaction between dichromate and hydriodic acid.