For an isothermal process, the essential condition is — Thermodynamics and Thermochemistry Chemistry Question

💡 Solution & Explanation

For an isothermal process, the temperature must remain constant at every instant of time, which means dT = 0. Δ T = 0 only means the initial and final temperatures are the same, which can happen in non-isothermal processes (like a cyclic or certain multi-step processes).