11th Class Chemistry Thermodynamics

  • question_answer 76)   If the combustion of 1 g of graphite produces 20.7 kJ of heat, what will be the molar enthalpy change? Give the significance of sign also.

    Answer:

      Heat of combustion \[\Delta H\] = - Heat released by 1 mole or 12 g of carbon \[=-20.7\times 12\] \[=-248.4kJ\,mo{{l}^{-1}}\]                


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