J & K CET Engineering J and K - CET Engineering Solved Paper-2009

  • question_answer
    The coordination compound of which one of the following compositions will produce two equivalents of AgCl on reaction with aqueous silver nitrate solution?

    A) \[CoC{{l}_{3}}.3N{{H}_{3}}\]   

    B) \[~CoC{{l}_{3}}.6N{{H}_{3}}\]

    C) \[CoC{{l}_{3}}.4N{{H}_{3}}\]   

    D) \[~CoC{{l}_{3}}.5N{{H}_{3}}\]

    Correct Answer: D

    Solution :

     Since, the coordination compound when reacts with aqueous silver nitrate solution, produces two equivalents of \[AgCl,\]the two Cl ions must be present outside the coordination sphere. Thus, the composition (formula) of the coordination compound must be \[[Co{{(N{{H}_{3}})}_{5}}Cl]C{{l}_{2}}\]or \[CoC{{l}_{3}}.5N{{H}_{3}}\] \[[Co{{(N{{H}_{3}})}_{5}}Cl]C{{l}_{2}}+2AgN{{O}_{3}}\xrightarrow{{}}\]\[[Co{{(N{{H}_{3}})}_{5}}Cl{{(N{{O}_{3}})}_{2}}+2AgCl\]


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