11th Class Chemistry Thermodynamics / रासायनिक उष्मागतिकी Question Bank 11th CBSE Chemistry Thermodynamics

  • question_answer
    When an ideal gas expands, there is no change in temperature. On the other hand, when a real gas expands, cooling is produced. Explain why.

    Answer:

                    In an ideal gas, there are no intermolecular forces of attraction and therefore, there is no expenditure of energy in overcoming these forces during expansion. On the other hand, in case of real gases, there are intermolecular forces. When a real gas expands, there is expenditure of energy in overcoming the intermolecular forces. This results in cooling which in turn decreases the temperature.


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