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

  • question_answer
    The relation between change in internal energy \[(\Delta E)\], change in enthalpy \[(\Delta H)\] and work done (W) is represented as                 [AFMC 1999]

    A)                 \[\Delta H=\Delta E+W\]             

    B)                 \[W=\Delta E-\Delta H\]

    C)                 \[\Delta E=W-\Delta H\]              

    D)                 \[\Delta E=\Delta H+W\]

    Correct Answer: A

    Solution :

              \[\Delta H=\Delta E+W\,\,\text{or}\,\,\Delta H=\Delta E+P\Delta V\].


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