Question

Thermodynamic

a. What are phase diagrams and show two or three diagrams b. Identify the state of a vapour on the phase diagram

Answer 1

A phase diagram is a graph showing the conditions of temperature and pressure under which a substance exists in different phases. The state of a vapor on the phase diagram depends on the temperature and pressure. Two phase diagrams are provided as examples.

Step-by-step explanation:

A phase diagram is a graph that shows the conditions of temperature and pressure under which a substance exists in different phases (solid, liquid, and gas). Let's take water as an example. The phase diagram of water has three main regions: solid, liquid, and gas. In the solid region, water exists as ice, in the liquid region, it exists as water, and in the gas region, it exists as vapor. The lines on the phase diagram represent the equilibrium conditions between two phases. For example, the line between the liquid and gas regions is the boiling point, where water changes from liquid to gas.

Here are two phase diagrams: The first one represents the phase diagram of a substance that exhibits sublimation (direct transition from solid to gas) and the second one represents the phase diagram of a substance that does not exhibit sublimation. Both diagrams show the three main regions: solid, liquid, and gas, and the lines representing phase transitions.

Answer 2

A) The Phase diagrams are attached.
B) the arrows indicate the state of vapor in the phase diagrams.

Imagine you're making ice cubes. A phase diagram is like a secret map that tells you what happens to a substance (like water) at different temperatures and pressures.

It's like a guide for the substance's "phases" or forms, like solid (ice), liquid (water), and gas (steam).

The diagram shows the special combinations of temperature and pressure where these phases exist.

For water, it might say at low temperatures and pressures, it's ice; at room temperature and normal pressure, it's liquid; and at high temperatures, it becomes steam. It's like a chart helping scientists understand the secrets of different materials under various conditions such as temperature and peressure.