Entropy

Question 1

what is the only way entropy decreases

Answer 1

Losing heat is the only way the entropy of a system can be
decreased.

Question 2

the entropy change of a closed system during an irreversible process is ………..

Answer 2

the entropy change of a closed system during an irreversible process is
always greater than the entropy transfer.

Question 3

𝑆gen is always positive or negative?

Answer 3

𝑆gen is always a positive quantity or zero.
Its value depends on the process, and thus it is not a property of the system.
In the absence of any entropy transfer, the entropy change of a system is
equal to the entropy generation.

Question 4

What is the increase in entropy principe

Answer 4

The entropy of an isolated system during a process always increases or, in the
limiting case of a reversible process, remains constant.
In other words, it never decreases. This is known as the Increase of Entropy Principle

Question 5

When is entropy conserved

Answer 5

Entropy is conserved during
the idealized reversible processes only and increases during all
actual processes

Question 6

what does isothermal mean

Answer 6

temp is unchanged