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

  • question_answer
    Which of the following compounds will absorb the maximum quantity of heat when dissolved in the same amount of water ? The heats of solution of these compounds at \[{{25}^{o}}C\] in kJ/mole of each solute is given in brackets                [AMU (Engg.) 2000]

    A)                 \[HN{{O}_{3}}(\Delta H=-33)\]  

    B)                 \[KCl(\Delta H=+17.64)\]

    C)                 \[N{{H}_{4}}N{{O}_{3}}\,(\Delta H=+25.5)\]        

    D)                 \[HCl\,(\Delta H=-74.1)\]

    Correct Answer: C

    Solution :

              More +ve is \[\Delta {{H}_{s}}\] more is heat of solution.


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