Manipal Engineering Manipal Engineering Solved Paper-2011

  • question_answer
    Concentrated nitric acid \[(HN{{O}_{3}})\] oxidizes phosphorus to

    A) \[{{H}_{3}}P{{O}_{4}}\]                                 

    B)                        \[{{H}_{3}}P{{O}_{3}}\]

    C)                        \[{{H}_{4}}{{P}_{2}}{{O}_{7}}\]                  

    D)                        \[{{H}_{3}}P{{O}_{2}}\]

    Correct Answer: A

    Solution :

    \[{{P}_{4}}+20HN{{O}_{3}}\xrightarrow{{}}4{{H}_{3}}P{{O}_{4}}+20N{{O}_{2}}+C{{O}_{2}}\]


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