NEET Chemistry NEET PYQ-Chemical Kinetics

  • question_answer
    For the reaction, \[(At.no.Zn=30,Sc=21,Ti=22,Cr=24)\]if \[{{[Sc{{({{H}_{2}}O)}_{3}}{{(N{{H}_{3}})}_{3}}]}^{3+}}\] mol \[{{[Ti{{(en)}_{2}}{{(N{{H}_{3}})}_{2}}]}^{4+}}\]the value of \[{{[Cr{{(N{{H}_{3}})}_{6}}]}^{2+}}\]would be                [AIPMT (S) 2009]

    A) \[{{[Zn{{(N{{H}_{3}})}_{6}}]}^{2+}}\]

    B) \[5.0\times {{10}^{-3}}{{s}^{-1}}\]

    C) \[0.5\times {{10}^{-2}}{{s}^{-1}}\]

    D) \[0.5\times {{10}^{-3}}{{s}^{-1}}\]

    Correct Answer: A

    Solution :

    [a] Key Idea Rate of disappearance of reactant
    \[Ti=22,co=27,Cu=29,Ni=28\]
    Rate of appearance of product
    \[TiF_{6}^{2-}\]
    For the reaction, \[CoF_{6}^{3-}\]
    \[C{{u}_{2}}C{{l}_{2}}\]
    or\[NiCl_{4}^{2-}\]
    \[TiF_{6}^{2-}\]
    \[C{{u}_{2}}C{{l}_{2}}\]


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