Question

One mole of an ideal gas at $300K$ is expanded isothermally from an initial volume of 1 litre to 10 litres . The change in energy for this process is $(R=2calmo{l}^{-1}{K}^{-1})$

• A. $163.7cal$
• B. $850.2cal$
• C. $1381.1cal$
• D. Zero

Answer 1

The correct option is D Zero

Change in internal energy depends upon temperature. At constant temperature, the internal energy of the gas remains constant,

so ΔE = 0