JEE Main & Advanced Chemistry Redox Reactions / रेडॉक्स अभिक्रियाएँ Question Bank Auto oxidation and Disproportionation

  • question_answer
    For decolourization of 1 mole of \[KMn{{O}_{4}}\], the moles of \[{{H}_{2}}{{O}_{2}}\] required is            [AIIMS 2004]

    A)                 1/2        

    B)                 3/2

    C)                 5/2        

    D)                 7/2

    Correct Answer: C

    Solution :

               \[2KMn{{O}_{4}}+3{{H}_{2}}S{{O}_{4}}\xrightarrow{{}}{{K}_{2}}S{{O}_{4}}+2MnS{{O}_{4}}\]                    \[+3{{H}_{2}}O+5O\] \[5{{H}_{2}}{{O}_{2}}+5O\xrightarrow{{}}5{{H}_{2}}O+5{{O}_{2}}\]           \[2KMn{{O}_{4}}+3{{H}_{2}}S{{O}_{4}}+5{{H}_{2}}{{O}_{2}}\xrightarrow{{}}{{K}_{2}}S{{O}_{4}}+2MnS{{O}_{4}}\]                 \[+8{{H}_{2}}O+5{{O}_{2}}\]


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