The solid and liquid phases of water can exist in
a state of equilibrium at 1 atmosphere of pressure
and a temperature of
(1) 0°C (3) 273°C
(2) 100°C (4) 373°C
Explanation: Water undergoes phase changes at 1 atm pressure as follows: Solidification, change from water to ice occurs at 0°C. Evaporation, change from liquid to gas occurs at 100°C.