LECTURE PHYSICAL CHEMISTRY 3rd EDITION ROBERT G. MORTIMER

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If one component and three
phases are present, f = 0
and there is no choice about
the temperature, the
pressure, or any other
intensive variable. This
three-phase state is
represented by a triple point
at which three coexistence
curves intersect. The solid–
liquid–vapor triple point of
water occurs at a
temperature of 273.16K and
a pressure of 4.562 torr.
p(mmHg)
218(atm)
4,562
D
A
B
0,01
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