The triple point of water is approximately:

A) 0°C at 1 atm

B) 0.01°C at 611.7 Pa

C) 100°C at 1 atm

D) −273.15°C at 0 Pa

Explanation

Triple point of water: 0.01°C (273.16 K) at 611.7 Pa. All three phases coexist in equilibrium.