Manipal Engineering Manipal Engineering Solved Paper-2011

  • question_answer
    van-Arkel method of purification of metals involves converting the metal to a

    A)  volatile stable compound

    B)                         non-volatile stable compound

    C)                         volatile unstable compound

    D)                         None of the above

    Correct Answer: A

    Solution :

    \[Ti+2{{I}_{2}}\xrightarrow{500\,\,K}\underset{\begin{smallmatrix}  volatile\,\,stable \\  \,\,\,\,\,compound \end{smallmatrix}}{\mathop{Ti\,\,{{I}_{4}}}}\,\xrightarrow{1700\,\,K}\]                                                          \[\underset{pure\,\,metal}{\mathop{Ti}}\,\]   \[2+{{I}_{2}}\]


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