NEET Sample Paper NEET Sample Test Paper-33

  • question_answer
    Platinum dissolved in aqua-regain to give

    A)  \[PtC{{l}_{2}}\]

    B)  P\[PtC{{l}_{4}}\]

    C)  \[PtC{{l}_{6}}\]             

    D)  \[{{H}_{2}}PtC{{l}_{6}}\]

    Correct Answer: D

    Solution :

    \[Pt+\underset{Conc.}{\mathop{2HN{{O}_{3}}}}\,+\underset{Conc.}{\mathop{6HCl}}\,\xrightarrow{{}}PtC{{l}_{4}}+2NOCl+4{{H}_{2}}O\]\[PtC{{l}_{4}}+2HCl\xrightarrow{{}}\underset{hexa\,\,chloroplatinic\,\,acid}{\mathop{{{H}_{2}}\left[ PtC{{l}_{6}} \right]}}\,\]


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