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NEET Sample Paper NEET Sample Test Paper-64

  • question_answer
    \[KMn{{O}_{4}}\] can be prepared from \[{{K}_{2}}Mn{{O}_{4}}\] as per the reaction \[3Mn{{O}_{4}}^{2}~\,+\,\,2{{H}_{2}}O\,\,\rightleftharpoons \,\,Mn{{O}_{4}}^{-}+Mn{{O}_{2}}\,+\,\,4O{{H}^{-}}\] The reaction can go to completion by removing \[O{{H}^{-}}\] ions by adding.

    A) KLOH              

    B) CO

    C) \[S{{O}_{2}}\]             

    D) HCl

    Correct Answer: B

    Solution :

    \[3{{K}_{2}}Mn{{O}_{4}}+2{{H}_{2}}O+4C{{O}_{2}}\to \] \[2KMn{{O}_{4}}+Mn{{O}_{2}}+4KHC{{O}_{3}}\] (Method for preparation of \[KMn{{O}_{4}}\])


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