The phase diagram for water is shown in FIGURE 17-37.
(a) What is the temperature T1 on the phase diagram?
(b) What is the temperature T2 on the phase diagram?
(c) What happens to the melting/freezing temperature of water if atmospheric pressure is decreased? Justify your answer by referring to the phase diagram.
(d) What happens to the boiling/condensation temperature of water if atmospheric pressure is increased? Justify your answer by referring to the phase diagram.

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Solid Liquid 101 Gas т, т, Т, T. Temperature, T (C) Pressure, P (kPa)