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Consider a different titration for this exercise. Potassium permanganate (KMnO4) is the titrant and hydrogen peroxide...

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Chemistry

Consider a different titration for this exercise. Potassiumpermanganate (KMnO4) is the titrant and hydrogen peroxide (H2O2)the analyte according to the following balanced chemical equation.2 MnO4− + 5 H2O2 + 6 H + → 2 Mn2+ + 5 O2 + 8 H2O

(a) What is the stoichiometry of MnO4− to H2O2? (ratio)

(b) Complete the following table for this titration. Data TableP3: Titration of hydrogen peroxide with potassium permanganate.

concentration of MnO4− 0.556 M

volume H2O2 solution 18.34 mL

mass H2O2 solution 18.42 g

volume of MnO4− solution 16.23 mL

Questions:

mmol of MnO4− : ?

mmol of H2O2: ?

mass of H2O2: ?

mass % of H2O2  in the original sample: ?

molarity of H2O2 in the original sample: ?

Answer & Explanation Solved by verified expert
4.2 Ratings (737 Votes)
a The balanced chemical equaiton is 2 MnO4 5 H2O2 6 H 2 Mn2 5 O2 8 H2O So the ratio of MnO4 to H2O2 is 25 b Given that concentration of MnO4 0556 M volume H2O2 solution 1834    See Answer
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