One mole of an ideal monoatomic gas undergoes adiabatic free expansion from 2 to , 300 K. The value — Thermodynamics and Thermochemistry Chemistry Question

💡 Solution & Explanation

In an adiabatic free expansion of an ideal gas, $\Delta U = 0$ implying $\Delta T = 0$ (isothermal). Entropy is a state function: $\Delta S = n R \ln(V_2/V_1) = 1 \times R \ln(20/2) = +R \ln 10$.