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JCECE Medical JCECE Medical Solved Paper-2013

  • question_answer
    For the reaction, \[{{C}_{3}}{{H}_{8}}(g)+5{{O}_{2}}(g)\xrightarrow{{}}3C{{O}_{2}}(g)+4{{H}_{2}}O(l)\] at constant temperature, \[\Delta H-\Delta E\] is

    A)  \[+\,3RT\]

    B)  \[-RT\]

    C)  \[+\,RT\]

    D)  \[-3RT\]

    Correct Answer: D

    Solution :

     For the given reaction, \[\Delta {{n}_{g}}={{n}_{p}}-{{n}_{R}}=3-6=-3\] \[\Delta H=\Delta E+\Delta {{n}_{g}}RT\] \[\Delta H-\Delta E=\Delta {{n}_{g}}RT\] \[\Delta H-\Delta E=-3RT\]


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