Liquifaction Of Gases

To find the work done by a gas during an isothermal expansion against a constant external pressure, follow these steps:

Identify the given values:
- Initial Volume, $V_1%20%3D%200.1%5C%2C%5Ctext%7BL%7D$
- Final Volume, $V_2%20%3D%200.25%5C%2C%5Ctext%7BL%7D$
- External Pressure, $P_%7B%5Ctext%7Bext%7D%7D%20%3D%202%5C%2C%5Ctext%7Bbar%7D$
- Conversion: $1%5C%2C%5Ctext%7BL%C2%B7bar%7D%20%3D%20100%5C%2C%5Ctext%7BJ%7D$
Change in volume: $%5CDelta%20V%20%3D%20V_2%20-%20V_1%20%3D%200.25%20-%200.1%20%3D%200.15%5C%2C%5Ctext%7BL%7D$
Work done: $W%20%3D%20-P_%7B%5Ctext%7Bext%7D%7D%20%5CDelta%20V%20%3D%20-2%20%5Ctimes%200.15%20%3D%20-0.30%5C%2C%5Ctext%7BL%C2%B7bar%7D$
Convert to joules: $W%20%3D%20-0.30%20%5Ctimes%20100%20%3D%20-30%5C%2C%5Ctext%7BJ%7D$
Negative sign indicates work done by the system; magnitude is $30%5C%2C%5Ctext%7BJ%7D$ .
Final Answer: $30%5C%2C%5Ctext%7BJ%7D$

Chapter Questions
1 MCQs