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NEET Sample Paper NEET Sample Test Paper-33

  • question_answer
    1 g of \[N{{H}_{4}}N{{O}_{3}}\] is decomposed in a bomb calorimeter. The temperature of the calorimeter increases by 6.12 K. The heat capacity of the system is\[1.23\text{ }KJ/g/deg\]. What is the molar heat of decomposition for\[N{{H}_{4}}N{{O}_{3}}\]?

    A)  \[-7.53\text{ }KJ/mol\]     

    B)  \[-398.1\text{ }KJ/mol\]

    C)  \[-16.1\text{ }KJ/mol\]     

    D)  \[-602\text{ }KJ/mol\]

    Correct Answer: D

    Solution :

    \[\Delta E=Q\times \Delta T\times \frac{M}{m}\] Given,  \[\Delta T=6.12K,\]    \[m=1\,g\] \[Q=1.23\,kJ,\] \[M=80\] \[\Delta E=1.23\times 6.12\times 80\] \[=602\,KJ/mol\]


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