The change of entropy caused by heat addition to system is defined as:

Question

BlackTom AI · Accepted Answer

The question asks for the definition of the entropy change caused by heat addition to a system.
Option: dS = δQ/T is presented as the definition to evaluate.
To understand this, recall that the infinitesimal change in entropy for a system is defined as dS = δQ_rev / T, where δQ_rev is the reversible heat transfer into the system at temperature T. This expresses the state function nature of entropy and how it accumulates when heat is added reversibly.
It is important to note a subtle but crucial distinction: the expression dS = δQ/T is strictly valid only for a reversible path. If heat is added irreversibly, the instantaneous heat transfer δQ is not related to the temperature by the same simple relation, and one must consider δQ_rev, or compute ΔS from a reversible path between the same initial and final states (ΔS = ∫(δQ_rev/T) along any reversible path between the two states).
Therefore, the statement can be considered correct in the sense that the differential form for entropy change relies on the reversible heat transfer divided by the temperature, dS = δQ_rev / T. If the option uses δQ/T without the rev subscript, it is commonly understood in thermodynamics education as shorthand for the reversible case, but strictly the precise definition uses δQ_rev.
In summary, the entropy change due to heat addition is defined by dS = δQ_rev / T, with the caveat that the subscript rev is essential to specify the reversible heat transfer, and using δQ for an irreversible process does not generally hold.

The change of entropy caused by heat addition to system is defined as:

View Explanation

Log in for full answers

Similar Questions

The second law of thermodynamics leads us to conclude that

As moisture from the air condenses on the outside of a cold glass of water, the entropy of the condensing moisture

Which of the following is a FALSE statement?

Question at position 6 How do energy transfers affect the universe?decrease entropyincrease entropy

Entropy definition implies that systems tend to disorder, which is against organized life. However, life is maintaned. Choose from below the incorrect answer:

Thermodynamics: A closed system is thermally isolated from the surroundings. The cycle consists of 2 processes:Process 1-2 is irreversible and adiabatic ( Q12=0 ) Process 2-1 is reversible but not adiabatic ( Q21≠0 ). Which of the following statements is/are true?

Which of the following statements is(are) true? I. The entropy change of a system is equal and opposite to the surroundings for any irreversible process. II. The entropy of the system must increase in any spontaneous process.

Which of the two Laws of Thermodynamics states that randomness and disorder are increasing in the universe.

More Practical Tools for Students Powered by AI Study Helper

Homework AI Solver

Stylized AI Paper Writer

Plagiarism Checker Assistant

Citation AI Academic Writing Tool

In-Class Translation Assistant

AI Note Generator

AI Quiz Answers

Past Exam Questions from University Test Bank

Smart Practice Assistant

Adaptive Practice

Making Your Study Simpler