In a volumetric analysis (redox titration) experiment, a solution of sodium oxalate (Na2C2O4) in...


In a volumetric analysis (redox titration) experiment, a solution of sodium oxalate (Na2C2O4) in aqueous H2SO4 is titrated with a solution of potassium permanganate (KMnO4) according to the following balanced chemical equation:

2KMnO4 + 8H2SO4 + 5Na2C2O4 {eq}\rightarrow {/eq} 2MnSO4 + 8H2O + 10CO2 + 5Na2SO4 + K2SO4.

What volume of 0.0388 M KMnO4 is required to titrate 0.134 g of Na2C2O4 dissolved in 20.0 mL of solution?

A) 1.38 mL

B) 3.45 mL

C) 10.3 mL

D) 25.8 mL

E) 20.0 mL


Titrations always involve incrementally adding a solution called the titrant. The titrant is added to the sample until the equivalence point is increased. In addition, the titration reaction must proceed rapidly and quickly. The titrant added must be quickly consumed by the analyte that is present. The laboratory glassware that is used to house and supply the titrant is a buret. The volume used can be measured by using the gradations present in the buret.

Answer and Explanation: 1

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The given balanced chemical equation for the oxidation-reduction reaction is:

{eq}\rm 2KMnO_4 + 8H_2SO_4 + 5Na_2C_2O_4 \to 2MnSO_4 + 8H_2O +...

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Learn more about this topic:

Balancing Redox Reactions and Identifying Oxidizing and Reducing Agents


Chapter 10 / Lesson 13

Learn about oxidizing and reducing agents, how to find them, and how to identify them in redox reactions. Learn about the different types of redox reactions and how to identify a redox reaction.

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