When an ideal diatomic gas is heated at a constant pressure, the fraction of heat energy supplied wh — Thermodynamics and Thermochemistry Chemistry Question

💡 Solution & Explanation

At constant pressure, heat supplied is q_p = n * $C_p$ * dT. The increase in internal energy is dU = n * $C_v$ * dT. The fraction is dU / q_p = $C_v$ / $C_p$ = 1 / γ. For a diatomic gas, γ = 7/5, so the fraction is 5/7.