JEE Main & Advanced JEE Main Paper (Held on 12-4-2019 Morning)

  • question_answer
    Given : \[C{{o}^{3+}}+{{e}^{-}}\to C{{o}^{2+}};{{E}^{o}}=+1.81V\] \[P{{o}^{3+}}+{{e}^{-}}\to C{{o}^{2+}};{{E}^{o}}=+1.81\,V\] \[C{{e}^{4+}}+{{e}^{-}}\to C{{e}^{3+}};{{E}^{o}}=+1.61\,V\] \[B{{i}^{3+}}+3{{e}^{-}}\to Bi\,;{{E}^{o}}=+\,0.20\,V\] Oxidizing power of the species will increase in the order :       [JEE Main Held on 12-4-2019 Morning]

    A) \[C{{e}^{4+}}<P{{b}^{4+}}<B{{i}^{3+}}<C{{o}^{3+}}\]

    B) \[C{{o}^{3+}}<P{{b}^{4+}}<C{{e}^{4+}}<B{{i}^{3+}}\]

    C) \[B{{i}^{3+}}<C{{e}^{4+}}<P{{b}^{4+}}<C{{o}^{3+}}\]

    D) \[B{{i}^{3+}}<C{{e}^{4+}}<P{{b}^{4+}}<C{{o}^{3+}}\]

    Correct Answer: D

    Solution :

    \[E_{\operatorname{Re}d}^{o}\uparrow \Rightarrow \]oxidizing power \[\uparrow \]


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