50cm3 of this aliquot of the sample was treated with pyrophosphate to mark the iron and chromium..Jun 23, 2021 · An alloy of chromel containing nickel,iron and chromium was analysed by a complexometric titration using EDTA as the titrant.The solution of an alloy was prepared by dissolving 0.7176g of the alloy in HNO3 and the diluted to mark thesishelp in a 250cm3 volumetric flask.

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