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NEET Sample Paper NEET Sample Test Paper-80

  • question_answer
    10 \[{{\operatorname{Cl}}^{-}}(aq)+2MnO_{4}^{-}\,(aq)\,\,+\,\,16{{H}^{+}}\,(aq)\]\[\,\,5C{{l}_{2}}\,(g)\,\,+\,\,2\,M{{n}^{2+}}\,(aq)\,\,+\,\,8{{H}_{2}}O\,(l)\]. The value of \[E{}^\circ \] for this reaction is 0.15 V. What is the value of the equilibrium constant (K) for this reaction?

    A)  \[2.4\,\,\times \,\,1{{0}^{25}}\]                        

    B)  \[4.9\,\,\times \,\,1{{0}^{12}}\]

    C)  \[1.2\,\,\times \,\,1{{0}^{5}}\]             

    D)  \[3.4\,\,\times \,\,1{{0}^{2}}\]

    Correct Answer: A

    Solution :

    \[K=anti\log \left[ \frac{nE{}^\circ }{0.059} \right]=anti\log \left[ \frac{10\times 0.15}{0.059} \right]=2.4\times {{10}^{25}}\]


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