Go to the Phase Changes tab. Select the oxygen molecule, and set the temperature

Question

Go to the Phase Changes tab. Select the oxygen molecule, and set the temperature to the given values by using the stove to increase or decrease the temperature. Increase the pressure of the cylinder by moving the lid of the cylinder down with the help of the finger. The pressure of the cylinder is indicated by the pressure gauge on the top left comer of the simulation. Observe that the pressure indicated by the pressure gauge varies. This is because the molecules inside the container collide on the walls of the container, exerting pressure. On the right-hand side of the simulation is the phase diagram for oxygen. The red point in the phase diagram corresponds to the temperature and pressure inside the cylinder. Identify on which part of the phase diagram the red point, representing the position on the plot, is located. Consider the position of the red point when the pressure shown by the pressure gauge is approximately equal to the pressure required, because the pressure indicated by the pressure gauge varies. Drag the appropriate items to their respective bins.

Explanation / Answer

1) Vaporization curve :

At 106 K and 0.6 atm pressure

2) At the triple point:

At 51 K and 0 atm pressure

3) Sublimation curve:

At 31 K and 0 atm pressure

4) At the critical point:

At 156 K and 1 atm pressure

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