Understanding Heat Capacity of Different States: Water, Ice, and Steam

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Heat capacity varies by the state of a substance, meaning that ice, liquid water, and steam each have distinct heat capacities. The specific heat capacity of liquid water is 4200 J kg-1 K-1, but ice and steam have different values. This variation is particularly noticeable near the freezing point, though changes in heat capacity are generally minor. The heat capacities of ice and steam differ significantly from that of liquid water. Understanding these differences is crucial for applications involving thermal properties of water in its various states.
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I have just learned 'heat capacity'. But I'm curious: does heat capacity apply to a substance's current state (solid, liquid or gas) or does it apply to all of its state?

eg. Water has a specific heat capacity of 4200 J kg-1 K-1, so does that mean ice and steam both have similar heat capacity as water?
 
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Nope, that figure you cited is the specific heat capacity of liquid water. Note that it varies slightly as a function of temperature, most noticeably near freezing point (Although even then it is a negligible variation).

For reference, the heat capacities of ice and steam can be found here:
http://www.engineeringtoolbox.com/water-thermal-properties-d_162.html
 
So, heat capacity of ice and steam is not the same as liquid water? Don't understand what you are talking about :-p
 
Kyoma said:
So, heat capacity of ice and steam is not the same as liquid water?

Yes, they are different.
 
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