2. Questions Bank
  3. JEE Main & Advanced
  4. Chemistry
  5. Thermodynamics / रासायनिक उष्मागतिकी

JEE Main & Advanced Chemistry Thermodynamics / रासायनिक उष्मागतिकी Question Bank Topic Test - Thermodynamics and Thermochemistry (8-5-21)

  • question_answer
    At \[{{27}^{o}}C,\] one mole of an ideal gas is compressed isothermally and reversibly from a pressure of 2 atm to 10 atm. The values of \[\Delta E\] and q are \[(R=2)\]        

    A) 0, - 965.84 cal

    B) - 965.84 cal, + 965.84 cal

    C) + 865.58 cal, - 865.58 cal

    D) - 865.58 cal, - 865.58 cal

    Correct Answer: A

    Solution :

    [a] \[W=2.303\,nRT\,\log \frac{{{P}_{2}}}{{{P}_{1}}}\]
                \[=2.303\times 1\times 2\times 300\,\log \frac{10}{2}=965.84\]
                at constant temperature, \[\Delta E=0.\]
                \[\Delta E=q+w\]; \[q=-w=-965.84\,cal\].


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