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

  • question_answer
    The enthalpy of combustion of \[{{C}_{6}}{{H}_{6(l)}}\] is          ? 3250 kJ. When 0.39 g of benzene is burnt excess of oxygen in an open vessel, the amount of heat evolved is [KCET 2000; AFMC 2000; DCE 2000]

    A)                 16.25 J  

    B)                 16.25 kJ

    C)                 32.5 J    

    D)                 32.5 kJ

    Correct Answer: B

    Solution :

              Heat evolved during combustion of 0.39g \[{{C}_{6}}{{H}_{6}}=\frac{3250\times 0.39}{78}=16.25\,kJ.\]


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