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NEET Chemistry Coordination Chemistry Question Bank Self Evaluation Test - Co-ordination Compounds

  • question_answer
    50 mL of 0.2 M solution of a compound with empirical formula \[CoC{{l}_{3}}.4N{{H}_{3}}\] on treatment with excess of \[AgN{{O}_{3}}(aq)\] yields 1.435g of\[AgCl\] Ammonia is not removed by treatment with concentrated \[{{H}_{2}}S{{O}_{4}}\]. The formula of the compound is:

    A) \[\left[ Co{{\left( N{{H}_{3}} \right)}_{4}} \right]C{{l}_{3}}\]

    B) \[\left[ Co\left( N{{H}_{3}} \right)4C{{l}_{2}} \right]Cl\]

    C) \[\left[ Co{{\left( N{{H}_{3}} \right)}_{4}} \right]C{{l}_{3}}\]

    D) \[\left[ CoC{{l}_{3}}\left( N{{H}_{3}} \right) \right]{{\left( N{{H}_{3}} \right)}_{3}}\]

    Correct Answer: B

    Solution :

    [b] Mole of \[AgCl=\frac{1.435}{143.5}=0.01;50mL\,of\,0.2\] M complex \[\equiv \] 0.01 mole \[\left[ Co{{\left( N{{H}_{3}} \right)}_{4}}C{{l}_{2}} \right]Cl\to {{\left[ CoN{{H}_{3}} \right)}_{4}}C{{l}_{2}}{{]}^{+}}+C{{r}^{-}}\]


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