2. Questions Bank
  3. NEET
  4. Chemistry
  5. Thermodynamics / रासायनिक उष्मागतिकी

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

  • question_answer
    Standard enthalpy and standard entropy changes for the oxidation of ammonia at 298 K are \[-\,\,382.64\text{ }kJ\text{ }mo{{l}^{-1}}\] and\[-45.6\text{ }J{{K}^{-1}}mo{{l}^{-1}}\], respectively Standard Gibb's energy change for the same reaction at 298 K is

    A) \[-22.1\,kJ\,mo{{l}^{-1}}\]       

    B) \[-339.3\text{ }kJ\text{ }mo{{l}^{-1}}\]

    C) \[-439.3\text{ }kJ\,mo{{l}^{-1}}\]         

    D) \[-523.2\text{ }kJ\text{ }mo{{l}^{-1}}\]

    Correct Answer: B

    Solution :

    [b] \[\Delta G=\Delta H-T\Delta S\] \[=-382.64-\left( 298\times 145.6\times {{10}^{-3}} \right)\] \[=-339.3\text{ }kJ\,mo{{l}^{-1}}\]


You need to login to perform this action.
You will be redirected in 3 sec spinner