NEET Sample Paper NEET Sample Test Paper-35

  • question_answer
    The heat capacity of a bomb calorimeter is\[500\text{ }J{{/}^{o}}C\]. When \[0.1\text{ }g\]of methane was burnt in this calorimeter, the temperature rose by\[{{2}^{o}}C\]. The value of \[\Delta E\]per mole will be

    A)  \[+1\,kJ\]          

    B)  \[-1\,kJ\]

    C)  \[+160\,kJ\]         

    D)  \[-160\,kJ\]

    Correct Answer: D

    Solution :

    \[\Delta E=-C\times \Delta t\times \frac{M}{m}\] (-sign is used because heat is evolved) \[=\frac{500\times 2\times 16}{0.1}\] \[=-160000J\] \[=-160\text{ }KJ\]


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