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

  • question_answer
    Reaction, \[{{H}_{2}}(g)+{{I}_{2}}(g)\to 2HI(g)\] \[\Delta H=-12.40\,kcal\]. According to this, the heat of formation of HI will be [MP PET 1990]

    A)                 12.4 kcal              

    B)                 ? 12.4 kcal

    C)                 ? 6.20 kcal

    D)                 6.20 kcal

    Correct Answer: C

    Solution :

           Heat of formation is for 1 mole.                                 Hence \[\Delta H_{f}^{0}\,(HI)=-12.40/2=-6.20\,kcal.\]


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