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JEE Main & Advanced AIEEE Solved Paper-2003

  • question_answer
    One mole of the complex compound \[Co{{(N{{H}_{3}})}_{5}}C{{l}_{3}}\], gives 3 moles of ions on dissolution in water. One mole of the same complex reacts with two moles of \[AgN{{O}_{3}}\] solution to yield two moles of \[AgCl\] (s). The structure of the complex is     AIEEE  Solved  Paper-2003

    A) \[[Co{{(N{{H}_{3}})}_{5}}Cl]C{{l}_{2}}\] 

    B) \[[Co{{(N{{H}_{3}})}_{3}}C{{l}_{2}}].2N{{H}_{3}}\]

    C) \[[Co{{(N{{H}_{3}})}_{4}}C{{l}_{2}}]Cl.\,N{{H}_{3}}\]

    D) \[[Co{{(N{{H}_{3}})}_{4}}Cl]C{{l}_{2}}.N{{H}_{3}}\]

    Correct Answer: A

    Solution :

    \[Co{{(N{{H}_{3}})}_{5}}Cl]\,C{{l}_{2}}\underbrace{{{[Co{{[N{{H}_{3}})}_{5}}Cl]}^{2+}}+2C{{l}^{-}}}_{three\,\,\,ions}\] \[\underset{free}{\mathop{2C{{l}^{-}}}}\,\,\,+\,\,\,2A{{g}^{+}}\xrightarrow{{}}2AgCl\] 2 mot        2mol.    2 mol


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