Shown here is the phase diagram for water: The arrows on the diagram represent d

Question

Shown here is the phase diagram for water:

The arrows on the diagram represent different processes where the time evolution goes from an initial state, i to a final state, f.

a) Describe briefly the process represented by arrow A.

b) Describe briefly the process represented by arrow B.

c) Describe briefly the process represented by arrow C.

d) On the diagram, where would an arrow be which represents an isobaric phase change from vapor directly to a solid?

e) The line l-s (orange line on left side of Solid) on the graph has a special form for water which is different than most other substances. Describe what makes it unusual and what this implies for water and our everyday experience.

Explanation / Answer

a) Gas to solid phase transitions are known as "deposition."

b)Gas to liquid phase transitions are known as "condensation."

c)Liquid to gas phase transitions are known as "vaporization."

d) Draw arrow at same point A(or arrow A) but towards left

e) This is water-ice interface. This shows at higher pressure, water can exist as liquid at temperature lower than 0oC

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