Is it possible for the entropy change of a closed system to be zero during an irreversible process group starts?

Another form of the second law of thermodynamics states that the total entropy of a system either increases or remains constant; it never decreases. Entropy is zero in a reversible process; it increases in an irreversible process.

Does entropy change in a closed system?

Today, it is customary to use the term entropy to state the second law: Entropy in a closed system can never decrease. In a closed system, available energy can never increase, so (because energy is conserved) its complement, entropy, can never decrease.

Can entropy of a system be zero?

Entropy is related to the number of accessible microstates, and there is typically one unique state (called the ground state) with minimum energy. In such a case, the entropy at absolute zero will be exactly zero.

Does the entropy of a closed system always increase?

The total entropy of a closed system is always increasing is another way of stating the second law of thermodynamics. A closed system is a system that does not interact in any way with its surroundings. In practice there are really no closed systems except, perhaps, the universe as a whole.

What happens to entropy when a closed system undergoes an irreversible process?

If a closed system is undergoing an irreversible process, the entropy of the system. Must increase. Always remains constant.

Can entropy be negative in a closed system?

The entropy of the whole (closed) system (Sun, Earth, and space) always increases. However, the entropy on Earth alone can indeed decrease. Entropy is often referred to as a measure of chaos, so order would be the opposite of entropy.

Can entropy change in a closed system be negative?

The entropy change of a system or its surroundings can be negative; but entropy generation cannot. 1- A process must proceeds in the direction that complies with the increase of entropy principle, Sgen > 0. A process that violates this principle is impossible.

Can the entropy of a closed system decrease?

This concept is fundamental to physics and chemistry, and is used in the Second law of thermodynamics, which states that the entropy of a closed system (meaning it doesn’t exchange matter or energy with its surroundings) may never decrease.

Is it possible for the entropy of both a closed system and its surroundings to increase or decrease during a process explain?

The entropy of an isolated system during a process always increases, or in the limiting case of a reversible process remains constant (it never decreases). This is known as the increase of entropy principle. The entropy change of a system or its surroundings can be negative; but entropy generation cannot.

What is the entropy of a closed system?

Note – By taking the gas as the system, we do not meet the requirement of the entropy’s definition of having a Closed System. If a process occurs in a closed system, the entropy of the system increases for irreversible processes and remains constant for reversible process. It never decreases.

How to find the entropy change for a reversible process?

To find the entropy change for an reversible process occuring in a closed system, we replace that process with any reversible process that connects the same initial and final states. Case – 2

What is the entropy of a gas reservoir?

If I take the system, in case 1, to be gas and reservoir, the entropy should be zero. Since heat is being removed from the reservoir thus Heat Q in the entropy formula for reservoir should be negative. And thus the total change should be zero in case 1as well.

How do you define a closed system?

Some people define a “closed system” as one that can exchange neither heat nor work not mass with the broader surroundings. Others, like us engineers, define a “closed system” as on that can exchange both heat and work with its surroundings, but not mass.