How do you read the phase diagram of water?

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How do you read the phase diagram of water?

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Answer 1 · 2017-02-17T07:05:02

Well, first you need a phase diagram........and then you must decide on conditions of temperature and pressure.

Explanation:

![diabetesinc.net]( useruploads.socratic.org )

Typically, pressure is plotted against temperature, and here we examine the phase of the water under different conditions of temperature and pressure. Of course, we can draw the ordinate $P = 1 \cdot a t m$ $P=1*atm$ , and we can see the phase transitions of water at $1 \cdot a t m$ $1*atm$ , i.e. at $0$ $0$ $^{\circ} C$ $""^@C$ and $100$ $100$ $^{\circ} C$ $""^@C$ .

The fact that the slope of the ice-water transition is NEGATIVE is a very unusual property, and it can show that ice is less DENSE than water (I think the slope of the graph is highly exaggerated!).

Depicted on the graph are the $triple point$ $"triple point"$ , the conditions of temperature and pressure at which all 3 phases are in equilibrium, and the $critical point$ $"critical point"$ , the conditions of temperature and pressure at which the densities of the liquid phase, and gaseous phase become equal, and you can no longer distinguish between the 2 phases. Clearly, these $critical points$ $"critical points"$ are at highly non-standard conditions of temperature and pressure.

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How do you read the phase diagram of water?

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