CET Karnataka Engineering CET - Karnataka Engineering Solved Paper-2008

  • question_answer
    For the reaction \[F{{e}_{2}}{{O}_{3}}+3CO\xrightarrow{{}}2Fe+3C{{O}_{2}}\] the volume of carbon monoxide required to reduce one mole of ferric oxide is

    A)  \[22.4\,\,d{{m}^{3}}\]                  

    B)  \[44.8\,\,d{{m}^{3}}\]

    C)  \[67.2\,\,d{{m}^{3}}\]                                  

    D)  \[11.2\,\,d{{m}^{3}}\]

    Correct Answer: C

    Solution :

    \[\underset{1\,\,mol}{\mathop{F{{e}_{2}}C{{O}_{3}}}}\,+\underset{3\,\,mol}{\mathop{3CO}}\,\xrightarrow{{}}2Fe+3C{{O}_{2}}\] Volume of 1 mole carbon monoxide                 = 22.4 L (at STP) 1 mole of ferric oxide is reduced by = 3 moles of CO \[=3\times 22.4\,L\] of \[CO\] \[=67.2\,\,d{{m}^{3}}\]of \[CO\]


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