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11th Class Physics Thermodynamical Processes Question Bank Critical Thinking

  • question_answer
    Enthalpy of solution of \[NaOH\] (solid) in water is \[-41.6\,kJ\,mo{{l}^{-1}}\]. When \[NaOH\] is dissolved in water, the temperature of water           [UPSEAT  2004]

    A)                 Increase              

    B)                 Decreases

    C)                 Does not change             

    D)                 Fluctuates indefinitely

    Correct Answer: A

    Solution :

                    Since process is exothermic then heat is evolved due to this temperature of water increases.


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