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MGIMS WARDHA MGIMS WARDHA Solved Paper-2005

  • question_answer
    Oxidation number of sulphur in \[{{H}_{2}}{{S}_{2}}{{O}_{8}}\]is:

    A)  +6                                         

    B) +8

    C) +21                                        

    D) +7

    Correct Answer: A

    Solution :

    In\[{{H}_{2}}{{S}_{2}}{{O}_{8}}\](morshall?s acid), two O-atom have-1 oxidation state each (peroxide Imkage) and rest six O-atom have-2 oxidation state. Hence \[2(+1)+2x+2(-1)+6(-2)=0\]                                 \[2+2x-2-12=0\]                                 \[2x=12\]                                 \[x=+6\]


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