Question

a. A sample of water vapour in an enclosed cylinder has an initial pressure of 500 Pa at an initial temperature of -0.01°C. A piston squeezes the sample smaller and smaller, without limit. Describe what happens to the water as the squeezing progresses.

b. Repeat part a if the initial temperature is 0.03°C warmer.

Short answer

a. As per the graph, ice is stable by squeezing progress.

b. In both gas and liquid state, the water vapours always exit.

Step-by-step solution

Step: 1 Explanation of  water squeezing progress

As per the basis of the graph, at a temperature$=-0.{01}^{o}C$and pressure = $500$Pa, the water vapour is converted into an ice stage. besides, if pressure squeezes, then new pressure develop but ice remains in the same stage

Discussion of water squeezing progress

At a temperature = $-0.{03}^{o}C$, new vapour has been developed that changes liquid phase of water. based on the above diagram, at a high pressure, in both gas and liquid state, the water vapours always exit.