JEE Main & Advanced Chemistry Thermodynamics / रासायनिक उष्मागतिकी Question Bank First law of thermodynamics and Hess law

  • question_answer
    For which of the following \[\Delta E=\Delta H\]                [MP PET 2003]

    A)                 \[{{N}_{2}}{{O}_{4}}(g)\] ⇌ \[2N{{O}_{2}}(g)\]

    B)                 \[2S{{O}_{2}}(g)+{{O}_{2}}(g)\] ⇌ \[2S{{O}_{3}}(g)\]

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

    D)                 \[{{H}_{2}}(g)+\frac{1}{2}{{O}_{2}}(g)\] ⇌ \[{{H}_{2}}O(l)\]

    Correct Answer: C

    Solution :

              \[\Delta n=0\] for this reaction so, \[\Delta E=\Delta H\].


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