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J & K CET Medical J & K - CET Medical Solved Paper-2011

  • question_answer
    In a volumetric experiment, it was found that a solution of\[KMn{{O}_{4}}\]is reduced to\[MnS{{O}_{4}}\]. If the normality of the solution is 1.0 N, then the molarity of the solution will be

    A)  0.5 M                                   

    B)  0.2 M

    C)  1.0 M                                   

    D)  0.4 M

    Correct Answer: B

    Solution :

    \[\overset{+7}{\mathop{2KMN{{O}_{4}}}}\,+3{{H}_{2}}S{{O}_{4}}\xrightarrow[{}]{{}}{{K}_{2}}S{{O}_{4}}+\overset{+2}{\mathop{2MnS{{O}_{4}}}}\,\] \[+3{{H}_{2}}O+5O\] \[\because \]Normality of the solution = 1.0 N \[\therefore \]Molarity of the solution\[=\frac{Normality}{Change\,in\,ON}\]                                                 \[=\frac{1.0}{5}=0.2M\]


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