NEET Sample Paper NEET Sample Test Paper-39

  • question_answer The reaction of aqueous\[KMn{{O}_{4}}\]with\[{{H}_{2}}{{O}_{2}}\] acidic conditions gives

    A) \[M{{n}^{4+}}\]and\[{{O}_{2}}\]

    B)  \[M{{n}^{2+}}\]and\[{{O}_{2}}\]

    C)  \[M{{n}^{2+}}\]and\[{{O}_{3}}\]

    D)  \[M{{n}^{4+}}\]and\[Mn{{O}_{2}}\]       

    Correct Answer: B

    Solution :

     The reaction of aqueous \[KMn{{O}_{4}}\]with \[{{H}_{2}}{{O}_{2}}\]in acidic medium is \[3{{H}_{2}}S{{O}_{4}}+2KMn{{O}_{4}}+5{{H}_{2}}{{O}_{2}}\xrightarrow{{}}\] \[5{{O}_{2}}+2MnS{{O}_{4}}+8{{H}_{2}}O+{{K}_{2}}S{{O}_{4}}\] In the above reaction, \[KMn{{O}_{4}}\]oxidises \[{{H}_{2}}{{O}_{2}}\]to and\[MnO_{4}^{-}\]gets reduced to \[M{{n}^{2+}}\]ion as \[MnS{{O}_{4}}.\]Hence, aqueous solution of\[KMn{{O}_{4}}\]with \[{{H}_{2}}{{O}_{2}}\]yields \[M{{n}^{2+}}\]and \[{{O}_{2}}\]in acidic conditions.

adversite



LIMITED OFFER HURRY UP! OFFER AVAILABLE ON ALL MATERIAL TILL TODAY ONLY!

You need to login to perform this action.
You will be redirected in 3 sec spinner

Free
Videos