The Concentration of Oxalate Ion (C₂O₄^2-)in a Sample Can Be $\rarr$

question 151

Multiple Choice

The concentration of oxalate ion (C₂O₄^2-) in a sample can be determined by titration with a solution of permanganate ion (MnO₄^-) of known concentration.The net ionic equation for this reaction is
2MnO₄^- + 5C₂O₄^2- + 16H⁺ $\rarr$ 2Mn²⁺ + 8H₂O + 10CO₂
A 30.00 mL sample of an oxalate solution is found to react completely with 21.93 mL of a 0.1725 M solution of MnO₄^-.What is the oxalate ion concentration in the sample?

• A)0.02914 M
• B)0.4312 M
• C)0.1821 M
• D)0.3152 M
• E)0.05044 M

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