A steel sample is to be analysed fo rCr and Mn simultaneously. By suitable treatment the Cr is oxidised to Cr_(2)O_(7)^(2-) andthe Mn to MnO_(4)^(-) . A 10.00g sample of steel is used to produce250.0mL of a solution containing Cr_(2)O_(7)^(2-) and MnO_(4)^(-) (a) A 10.00mL portion of this solution is added to a BaCl_(2) solutionand by proper adjument of theacidity, the chromimum is completeleyprecipitated as 0.0549g BaCrO_(4). (b) A second 10.00mL portion of this soltuion requires exactily 15.95mL of 0.0750M standard Fe^(2+) solution for its titaration(in acid solution). Calculatethe % of Cr in the steel sample. (Cr = 52, Mn = 55, Ba = 137)

A steel sample is to be analysed fo rCr and Mn simultaneously. By suit

1.	A steel sample is to be analysed fo rCr and Mn simultaneously. By suitable treatment the Cr is oxidised to Cr_(2)O_(7)^(2-) andthe Mn to MnO_(4)^(-) . A 10.00g sample of steel is used to produce250.0mL of a solution containing Cr_(2)O_(7)^(2-) and MnO_(4)^(-) (a) A 10.00mL portion of this solution is added to a BaCl_(2) solutionand by proper adjument of theacidity, the chromimum is completeleyprecipitated as 0.0549g BaCrO_(4). (b) A second 10.00mL portion of this soltuion requires exactily 15.95mL of 0.0750M standard Fe^(2+) solution for its titaration(in acid solution). Calculatethe % of Cr in the steel sample. (Cr = 52, Mn = 55, Ba = 137)
Answer» ANSWER :`%` of `CR = 2.821%` of `MN = 1.496%`