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CET Karnataka Medical CET - Karnataka Medical Solved Paper-2009

  • question_answer
    \[0.5mole\]of each of \[{{H}_{2}},S{{O}_{2}}\]and  are kept in a container. A hole was made in the container. After 3 h, the order of partial pressures in the container will be

    A)  \[pS{{O}_{2}}>p{{H}_{2}}>pC{{H}_{4}}\]

    B)  \[pS{{O}_{2}}>pC{{H}_{4}}>p{{H}_{2}}\]

    C)  \[p{{H}_{2}}>pS{{O}_{2}}>pC{{H}_{4}}\]

    D)  \[p{{H}_{2}}>pC{{H}_{4}}>pS{{O}_{2}}\]

    Correct Answer: B

    Solution :

    Rate of diffusion \[\propto \frac{1}{\sqrt{molecular\,mass}}\] \[\therefore \] Order of diffusion: \[{{H}_{2}}>C{{H}_{4}}>S{{O}_{2}}\] and amount left is in the order \[S{{O}_{2}}>C{{H}_{4}}>{{H}_{2}}\] Hence, order of partial pressure is \[pS{{O}_{2}}>pC{{H}_{4}}>p{{H}_{2}}\]


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