Science Photo of the Day #973

Science photo 973

We saw that we could have an equilibrium between water as a liquid and a solid by keeping the temperature at 0°C. What would you have to do to also have equilibrium with water as a gas?

See the answer.

Graham Lyons wrote on Wed, 12/10/2014 - 14:47:

Keep the water in a closed container, the temperature at 100ºC and with the container continuously expanding to keep the internal pressure constant.

dwires wrote on Mon, 03/17/2014 - 08:12:

Keep the temperature at 212 F (100 C).