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 containingCr_(2)O_(7)^(2-) and MnO_(4)^(-).10 mL of this solution is added to BaCl_(2) solution and by prooper adjumentof the pH, the chromium is completely precipitate as BaCrO_(4) (0.0549g). The second 10 mL solution protion requires exactly 15.95 mL of 0.0750 M standardfor complete reduction of this solution. Calculate %ofMn and Cr in this sample.

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 containingCr_(2)O_(7)^(2-) and MnO_(4)^(-).10 mL of this solution is added to BaCl_(2) solution and by prooper adjumentof the pH, the chromium is completely precipitate as BaCrO_(4) (0.0549g). The second 10 mL solution protion requires exactly 15.95 mL of 0.0750 M standardfor complete reduction of this solution. Calculate %ofMn and Cr in this sample.
Answer» ANSWER :`CR = 2.823%, MN = 3.29%`