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NEET Chemistry Thermodynamics / रासायनिक उष्मागतिकी Question Bank Self Evaluation Test - Thermodynamics

  • question_answer
    For the reaction \[{{C}_{3}}{{H}_{8}}(g)+5{{O}_{2}}(g)\to 3C{{O}_{2}}(g)+4{{H}_{2}}O(l)\] at constant temperature, \[\Delta H-\Delta E\] is

    A) \[-RT\]              

    B) \[+RT\]

    C) \[-3\text{ }RT\]              

    D) \[+3\text{ }RT\]

    Correct Answer: C

    Solution :

    [c] \[\Delta H=\Delta E+\Delta nRT\] \[\Delta n=3-\left( \text{1}+5 \right)\] \[=3-6=-3\] \[\Delta H-\Delta E=\left( -3RT \right)\]


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