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CET Karnataka Engineering CET - Karnataka Engineering Solved Paper-2000

  • question_answer
    The brown ring test for \[\text{N}{{\text{O}}_{\text{2}}}\]and \[\text{NO}_{3}^{-}\]is due to the formation of complex ion with the formula:

    A) \[{{[Fe{{({{H}_{2}}O)}_{6}}]}^{2+}}\]      

    B)  \[{{[Fe(NO){{(CN)}_{5}}]}^{2+}}\]

    C) \[{{[Fe{{({{H}_{2}}O)}_{5}}NO]}^{2+}}\]

    D)  \[{{[Fe({{H}_{2}}O){{(NO)}_{5}}]}^{2+}}\]

    Correct Answer: C

    Solution :

    The brown ring test for \[\text{NO}_{2}^{-}\]and\[\text{NO}_{3}^{-}\]  is  due  to  formation  of \[{{[Fe{{({{H}_{2}}O)}_{5}}NO]}^{2+}}\]


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