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JEE Main & Advanced Chemistry Thermodynamics / रासायनिक उष्मागतिकी Question Bank Heat of reaction

  • question_answer
    Standard molar enthalpy of formation of \[C{{O}_{2}}\] is equal to [IIT JEE 1997; BHU 2001]

    A)                 Zero

    B)                 The standard molar enthalpy of combustion of gaseous carbon

    C)                 The sum of standard molar enthalpies of formation of \[CO\] and \[{{O}_{2}}\]

    D)                 The standard molar enthalpy of combustion of carbon (graphite)

    Correct Answer: D

    Solution :

              Standard molar heat enthalpy \[({{H}^{o}})\] of a compound is equal to its standard heat of formation from most stable states of initial components.


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