The change in entropy of 20.0 moles of ideal monatomic constant volume gas as it changes from an initial temperature 300 K to its final temperature is 200 J/K. What is the final temperature of the gas?

Question

Quizplus · Accepted Answer

The change in entropy for an ideal gas at constant volume is given by ΔS = nCvln(Tf/Ti). For a monatomic ideal gas, Cv = (3/2)R. Using ΔS = 200 J/K, n = 20 moles, and Ti = 300 K, solve for Tf to find Tf = 669 K.

The Change in Entropy of 20