Which quantity remains constant during an isothermal process of an ideal gas?

💡 Solution & Explanation

An isothermal process represents a thermodynamic state change where the temperature of the system remains perfectly constant throughout the transformation. Pressure and volume change inversely in accordance with Boyle's law during such expansions or compressions of an ideal gas. According to the first law of thermodynamics, any heat added during an isothermal process is completely converted into work.