Potassium permanganate solutions used in oxidation-reduction titrations are often standardized against sodium oxalate, Na₂C₂O₄, used as a primary standard. The reaction involved is 5C₂O₄²⁻(aq) + 2MnO₄⁻(aq) + 16 H⁺(aq) → 2Mn²⁺(aq) + 8H₂O(l) + 10CO₂(g) A 0.2452 g sample of sodium oxalate is dissolved in 100 mL of acid solution, and the permanganate solution is added slowly from a buret. The endpoint is reached when 15.85 mL of the permanganate solution has been added. The molar mass of sodium oxalate is 134.00 g/mol. Calculate [MnO₄⁻], the molar concentration of the permanganate solution.
Potassium permanganate solutions used in oxidation-reduction titrations are often standardized against sodium oxalate, Na₂C₂O₄, used as a primary standard. The reaction involved is 5C₂O₄²⁻(aq) + 2MnO₄⁻(aq) + 16 H⁺(aq) → 2Mn²⁺(aq) + 8H₂O(l) + 10CO₂(g) A 0.2452 g sample of sodium oxalate is dissolved in 100 mL of acid solution, and the permanganate solution is added slowly from a buret. The endpoint is reached when 15.85 mL of the permanganate solution has been added. The molar mass of sodium oxalate is 134.00 g/mol. Calculate [MnO₄⁻], the molar concentration of the permanganate solution.
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ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
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Chapter1: Chemical Foundations
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Potassium permanganate solutions used in oxidation-reduction titrations are often standardized against sodium oxalate, Na₂C₂O₄, used as a primary standard. The reaction involved is
5C₂O₄²⁻(aq) + 2MnO₄⁻(aq) + 16 H⁺(aq) → 2Mn²⁺(aq) + 8H₂O(l) + 10CO₂(g)
A 0.2452 g sample of sodium oxalate is dissolved in 100 mL of acid solution, and the permanganate solution is added slowly from a buret. The endpoint is reached when 15.85 mL of the permanganate solution has been added. The molar mass of sodium oxalate is 134.00 g/mol. Calculate [MnO₄⁻], the molar concentration of the permanganate solution.
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