A hydrogen peroxide solution is analyzed by adding a slight excess of standard KMNO, solution and back-titrating the unreacted KMNO, with standard Fe" solution. A 0.587-g sample of the H,O, solution is taken, 25.0 ml. of 0.0215 M KMNO, is added, and the back-titration requires 5.10 ml, of 0.112 M Fe solution. What is the percent H,O2 in the sample? You may need to use any of the following chemical equations. 50, + 2Mn2+ + 8H,0 5H,0, + 2Mn0, + 6H* - 3MN2+ + 2Mn0; + 40H" - 5Mno2 + 2H,0 5FE2+ + Mn0 +8H* 2FE2+ + Mn0, + 4H* 5Fe +Mn2+ + 4H,0 2Fe+ + Mn2+ + 2H,0
Extracted text: Q4/ A hydrogen peroxide solution is analyzed by adding a slight excess of standard KMNO, solution and back-titrating the unreacted KMNO, with standard Fe" solution. A 0.587-g sample of the HOz solution is taken, 25.0 mL of 0.0215 M KMNO, is added, and the back-titration requires 5.10 mL of 0.112 M Fe solution. What is the percent H2O2 in the sample? You may need to use any of the following chemical equations. 5H,0, + 2MN0, + 6H* - 50, + 2MN2+ + 8H,0 3Mn2+ + 2Mn0, + 40H- - 5Mno, + 2H,0 5FE2+ + Mn0, + 8H* - 5Fe+ + Mn2+ + 4H,0 2Fe2+ + Mn0, + 4H* - 2Fe+ + Mn2+ + 2H,0