CEE Kerala Engineering CEE Kerala Engineering Solved Paper-2009

  • question_answer
    When a sample of gas is compressed at constant temperature from 15 atm to 60 atm, its volume changes from\[76\,c{{m}^{3}}\text{ }to\text{ }20.50\text{ }{{m}^{3}}\]. Which of the following statements are possible explanations of this behaviour?
    1. The gas behaves non-ideally
    2. The gas dimerises
    3. The gas is adsorbed into the vessel walls

    A) 1, 2 and 3            

    B) 1 and 2 only

    C) 2 and 3 only      

    D)        1 only

    E) 3 only

    Correct Answer: D

    Solution :

    At constant temperature, for ideal gas, \[{{p}_{1}}{{V}_{1}}={{p}_{2}}{{V}_{2}}\] For the given sample, \[15\times 76=60\times 20.5\] \[\therefore \]  \[{{p}_{1}}{{V}_{1}}\ne {{p}_{2}}{{V}_{2}}\] \[\therefore \]The gas behaves non-ideally. However the gas neither undergo dimerization nor adsorbed into the vessel walls.


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