Question

How exactly is heat supplied in an reversible isothermal process. If the temperature of system and surroundings always remains the same, then how come surrounding is supplying heat?

I studied that T of system and surrounding is the same while studying entropy.

Answer 1

In a reversible isothermal process, heat is supplied to the system by the surroundings while maintaining the same temperature.

Step-by-step explanation:

In a reversible isothermal process, heat is supplied to the system by the surroundings while maintaining the same temperature.

The second law of thermodynamics states that for any system undergoing an irreversible process, there is an increase in entropy.

Since entropy change is given by Q/T, where Q is the heat transferred and T is the temperature, heat transfer from the surroundings to the system increases the entropy of the system while keeping the overall entropy of the universe constant or increasing.