When boiling water, what is the degree of freedom inside the vapour dome?

AI Thread Summary
The discussion revolves around the degree of freedom within the vapor dome during water boiling, specifically questioning why it is considered to be one in the wet region. Participants reference the Gibbs phase rule to explain this concept, noting that although two properties like pressure and dryness fraction are needed to locate a point inside the dome, only one intensive property is necessary to define the state. The conversation emphasizes that there is only one component involved in this equilibrium scenario. The clarification of these concepts is essential for understanding the thermodynamic behavior of water in its phase transitions. Ultimately, the degree of freedom in the vapor dome is a critical aspect of thermodynamic analysis.
Death eater
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When water converts to steam while boiling a vapour dome can be formed, what is the degree of freedom inside this vapour dome and on the saturated points?
 
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Are you asking about, or how to apply, the phase rule?
 
Bystander said:
Are you asking about, or how to apply, the phase rule?
Actually I wanted to understand why degree of freedom is 1 in the wet region ??
I know by the Gibbs formula it comes 1 but to locate certain point inside the dome we need to know two properties ( eg- pressure and dryness fraction) ?
How can we define the state by just one intensive property?
 
Death eater said:
dryness fraction
How many components?
 
Bystander said:
How many components?
There is only 1 component
 
Death eater said:
only 1 component
At equilibrium?
 

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