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JEE Main & Advanced Chemistry Redox Reactions / रेडॉक्स अभिक्रियाएँ Question Bank Mock Test - Redox Reactions

  • question_answer
    Amount of oxalic acid present in a solution can be determined by its titration with \[KMn{{O}_{4}}\]solution in the presence of\[{{H}_{2}}S{{O}_{4}}\]. The titration gives unsatisfactory result when carried out in the presence of HCI. Because HCI:

    A) gets oxidized by oxalic acid to chlorine

    B)  Furnishes \[{{H}^{+}}\] ions in addition to those from oxalic acid

    C)  Reduces permanganate to \[M{{n}^{2+}}\]

    D)  oxidizes oxalic acid to carbon dioxide and water

    Correct Answer: C

    Solution :

    [c] \[HCl\]being stronger reducing agent reduces \[Mn{{O}_{4}}^{-}\]to \[M{{n}^{2+}}\]and result of the titration becomes unsatisfactory.


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