An ideal gas is compressed at a constant temperature of 27°C, during which 900 J of work is done on the gas. The change in entropy of the gas is

Question

Quizplus · Accepted Answer

The change in entropy (ΔS) for an isothermal process is given by ΔS = -W/T, where W is the work done on the gas and T is the temperature in Kelvin. Converting 27°C to Kelvin gives 300 K. Thus, ΔS = -900 J / 300 K = -3 J/K.

An Ideal Gas Is Compressed at a Constant Temperature of 27°C