CMC Medical CMC-Medical Ludhiana Solved Paper-2009

  • question_answer
    Identify the reaction for which\[\Delta H\ne \Delta E.\]

    A)  \[S\,(\text{rhombic})+{{O}_{2}}(g)\xrightarrow{{}}S{{O}_{2}}(g)\]

    B)  \[{{N}_{2}}(g)+{{O}_{2}}(g)\xrightarrow{{}}2NO\,(g)\]

    C)  \[{{H}_{2}}(g)+C{{l}_{2}}(g)\xrightarrow{{}}2HCl(g)\]

    D)  \[CO(g)+\frac{1}{2}{{O}_{2}}(g)\xrightarrow{{}}C{{O}_{2}}(g)\]

    Correct Answer: D

    Solution :

                    \[\Delta H\ne \Delta E\]for\[CO(g)+\frac{1}{2}{{O}_{2}}(g)\xrightarrow{{}}C{{O}_{2}}(g)\]as \[\Delta n\ne 0\]


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