Which of the following is true for reversible adiabatic process involving an ideal gas? — Thermodynamics and Thermochemistry Chemistry Question

💡 Solution & Explanation

For reversible adiabatic: P ∝ T^(γ/(γ-1)). dP/dT = (γ/(γ-1))*(P/T). As γ increases (1.33→1.4→1.67), γ/(γ-1) decreases (4.0→3.5→2.5). Therefore magnitude of slope dP/dT decreases as γ increases — gas with higher γ has low magnitude of slope in P vs T curve (D correct).