JEE Main & Advanced Sample Paper JEE Main - Mock Test - 41

  • question_answer
    When 1 L of \[C{{O}_{2}}\] is heated with graphite, the volume of the gases collected is 1.5 L. Calculate the number of moles of CO produced at STP-

    A) \[\frac{1}{11.2}\]          

    B)        \[\frac{28}{22.4}\]

    C) \[\frac{1}{22.4}\]          

    D)        \[\frac{14}{22.4}\]

    Correct Answer: C

    Solution :

    [c] \[\underset{1-x}{\mathop{C{{O}_{2}}\left( g \right)+C\left( s \right)}}\,\to \underset{2x}{\mathop{2CO\left( g \right)}}\,\] Total volume \[=1+x=1.5\] \[\therefore \text{ }x=0.5L\] Volume of \[CO=2\times 0.5=1L\] Moles of \[CO=\frac{1}{22.4}\] moles


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