A sample of pure water is initially at atmospheric pressure and has a temperatur

Question

A sample of pure water is initially at atmospheric pressure and has a temperature that is just above the freezing point.
(a) If the temperature of the sample is increased while the pressure is held constant, what phase changes occur?
melting
evaporation
condensing
freezing
sublimating
gas to solid
none of these

(b) Suppose, instead, that the pressure of the sample is decreased while the temperature is held constant. What phase changes occur now?
melting
evaporation
condensing
freezing
sublimating
gas to solid
none of these

Explanation / Answer

a) liquid turn to gas    ( evaporation) b) first liquid turns to solid , then the solid sublimates to gas.     ( first frezzing occur then sublimating)

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