The excess reagent required 430ml back-titration with


The Cr plating on a surface that measured 3X4cm was dissolved in HCl. The pH was suitably adjusted, following which 15ml of .01768 M EDTA were introduced. The excess reagent required 4.30mL back-titration with .00812M Cu2+. Calculate the average weight of Cr on each square centimeter of surface.

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Chemistry: The excess reagent required 430ml back-titration with
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