What is the magnitude of work done by the system? — Thermodynamics and Thermochemistry Chemistry Question

💡 Solution & Explanation

Work done = -PΔV = -ΔngRT. Here Δng is computed for the actual reaction producing 0.4 mol $CO_2$, 0.4 mol $CO$, and 0.9 mol $H_2O$. Under constant pressure at 800 K, this equals 2.06 kcal.