RAJASTHAN PMT Rajasthan - PMT Solved Paper-2005

  • question_answer
    Which phosphorus reacts with \[KOH\] solution to produce phosphene gas?

    A)  White phosphorus

    B)  Red phosphorus

    C)  Both (a) and (b)

    D)  None of the above

    Correct Answer: A

    Solution :

    White phosphorus on heating with aqueous solution of \[KOH\] produce phosphene \[(P{{H}_{3}})\] gas \[\underset{\begin{smallmatrix}  \,\,\,\,\,\,\,\,\,White \\  \,\,\,\,\,\,\,phosphorus \end{smallmatrix}}{\mathop{{{P}_{4}}}}\,+3KOH+3{{H}_{2}}O\xrightarrow{{}}3K{{H}_{2}}P{{O}_{2}}\]                                                    \[\underset{Phosphene}{\mathop{+P{{H}_{2}}}}\,\]


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