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1 mar 2018 · This work aims to present the international comparison results, as well as the studies needed to develop a certified reference material (CRM) of K2Cr2O7 for redox titrations.
We evaluated several literature-based replacement oxidants for K2Cr2O7 (potassium dichromate) and identified KIO3 (potassium iodate) as the only chemically viable alternative for thiosulfate standardizations, consistent with use of iodate by others.
1 sty 2009 · PDF | On Jan 1, 2009, T. Jeevananda published Quantitative estimation of K2Cr2O7 salt using iodo-potentiometric technique of analysis | Find, read and cite all the research you need on ...
We evaluated several literature-based replacement oxidants for K2Cr2O7 (potassium dichromate) and identified KIO3 (potassium iodate) as the only chemically viable alternative for thiosulfate standardizations, consistent with use of iodate by others.
23 paź 2019 · This document provides instructions for estimating Fe (II) ions in a solution by titrating against a standard solution of potassium dichromate (K2Cr2O7) using diphenylamine as an internal indicator. The procedure involves preparing standard solutions of K2Cr2O7, sulfuric acid, and a Mohr's salt solution containing the unknown amount of Fe (II).
3 paź 2015 · K2Cr2O7 has the following key properties: 1. It forms orange crystals that melt at 669 K and are moderately soluble in cold water but less soluble in hot water. 2. It is a powerful oxidizing agent that oxidizes substances like I-, Fe2+, H2S, and SO2 in the presence of dilute sulfuric acid. 3.
15 sie 2019 · In this work different amount of acidic (HCl) and alkaline (NaOH) solutions were added to stoke solutions of K2CrO4 and K2Cr2O7 to show the effect of pH values on their spectra.
