Maximum work can a gas do, if it is allow to expand isothermally against — Thermodynamics and Thermochemistry Chemistry Question

💡 Solution & Explanation

Work done during expansion is w = -P_ext * dV. To maximize work done BY the gas, the external pressure (pressure of the surrounding) should be as high as possible, close to the internal pressure of the gas (reversible expansion). Thus, high pressure of surrounding gives maximum work.