RE-NEET2026Chemistry-Redox Reactions
RE-NEET 2026 Chemistry Titration MCQ Question
Type: MCQ-numerical-Medium-Class 11
In an acidic medium, 10 mL of 0.25 M oxalic acid is titrated with KMnO₄ solution. If the volume of KMnO₄ solution required to reach end point is 10 mL, the strength of the KMnO₄ solution is
A
0.20 M
B
0.25 M
C
0.15 M
D
0.10 M
Correct Answer
Option A
Detailed Explanation
The reaction between oxalic acid and KMnO₄ in acidic medium is: 5C₂O₄²⁻ + 2MnO₄⁻ + 16H⁺ → 10CO₂ + 2Mn²⁺ + 8H₂O. Using the stoichiometry of the reaction, the molarity of KMnO₄ can be calculated as 0.20 M.
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