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

  • question_answer
    \[{{C}_{\text{dia}}}\] + \[{{O}_{2}}\to C{{O}_{2}};\] \[\Delta H=-395.3\,kJ/mole\] \[{{C}_{gr}}+{{O}_{2}}\to C{{O}_{2}};\,\Delta H=-393.4\,kJ/mole\] \[{{C}_{gr}}\to {{C}_{\text{dia}}};\,\Delta H=\]                                   [BHU 2003]

    A)                 ? 3.8     

    B)                 ? 1.9

    C)                 + 3.8     

    D)                 + 1.9

    Correct Answer: D

    Solution :

              By (ii) ? (i), \[{{C}_{gr}}\to {{C}_{dia}}\,,\,\,\Delta H=+1.9\].


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