What is the Formula for Calculating Entropy Change in a Phase Transition?

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Homework Help Overview

The discussion revolves around calculating the entropy change during a phase transition of water to steam at a constant temperature of 100°C. The subject area is thermodynamics, specifically focusing on entropy and phase changes.

Discussion Character

  • Exploratory, Conceptual clarification, Assumption checking

Approaches and Questions Raised

  • The original poster attempts to apply a formula for entropy change but questions the correctness of their approach. Some participants inquire about the specific formula being referenced and seek clarification on the terms used, such as absolute temperature and the meaning of "Q."

Discussion Status

The discussion is ongoing, with participants exploring different interpretations of the formula and questioning the definitions involved. There is a focus on clarifying concepts rather than reaching a consensus on a solution.

Contextual Notes

Participants are navigating potential misunderstandings regarding the formula for entropy change and the definitions of variables, such as temperature and heat transfer.

Nicco de Vera
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Homework Statement


Compute the entropy change of 5.00 g of water at 100°C as it changes to steam at 100°C under standard pressure.

Homework Equations

The Attempt at a Solution


5/100+100 is what i did and my teacher says its wrong 'cause its in the formula
 
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Nicco de Vera said:
wrong 'cause its in the formula
In what formula?
 
it is said that the formula was change in S= Change in Q / T
 
It said absolute temperature; what is the absolute temperature? Further, "Q" is not mass.
 

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