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BCECE Engineering BCECE Engineering Solved Paper-2005

  • question_answer
    In Ostwald process of manufacturing of \[\text{HN}{{\text{O}}_{\text{3}}}\text{,}\]catalyst used is:

    A) Mo                                        

    B) Fe

    C) Mn                        

    D)        Pt          

    Correct Answer: D

    Solution :

    Key Idea: Write the reaction to find catalyst of Ostwald process.       \[4N{{H}_{3}}+S{{O}_{2}}\xrightarrow{Pt}4NO+6{{H}_{2}}O+Heat\] \[2NO+{{O}_{2}}\xrightarrow{50{{\,}^{o}}C}2N{{O}_{2}}(g)\] \[3N{{O}_{2}}+{{H}_{2}}O\xrightarrow{{}}2HN{{O}_{3}}+NO\] \[\therefore \]Pt is catalyst in Ostwald process.


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