In a given process on an ideal gas, dw = 0 and dq < 0. Then for the gas, — Thermodynamics and Thermochemistry Chemistry Question

💡 Solution & Explanation

dU = dq + dw. Since dw = 0 and dq < 0, we have dU < 0. For an ideal gas, internal energy is directly ∝ temperature (U = nCvT). Since dU < 0, the temperature must decrease.