For the following questions refer the phase diagram for the mysterious substance

Question

For the following questions refer the phase diagram for the mysterious substance X. What is the critical temperature of compound X If you were to have a bottle containing compound X in your closet, what phase would it most likely be in At what temperature and pressure will, all three phases coexist If a bottle of compound X is held at a 45 atm and 100 degree C, describe what will happen if the temperature is raised to 400 degree C Why can't compound X be boiled at a temperature of 200 degree C If I wanted to, could I drink compound X

Explanation / Answer

Mysterious substance X

1) Critical temperature of Compound X

The critical temperature of a substance is the temperature at and above which vapor of the substance cannot be liquefied, no matter how much pressure is applied.

As we can see it is 770®C.

2) If you were to have a bottle containing compound in your closet, what phase would it most likely be in?

When X is in your closet and in the bottle. It will be at room temperature and at 1 atm pressure. So it will be in gaseous phase. Gas

3) At what temperature and pressure will all three phases coexist?

Its where all the three lines of phases meet. 350®C and 40 atm

4) If I have a bottle of compound X at a pressure of 45 atm and temperature of 100 C, describe what will happen if I raise the temperature to 400C?

Substance X will melt. (Solid à liquid)

5) Why can’t compound X be boiled at a temperature of 200 C?                   

It is only in solid or gas phase at 200®C.

6) If I wanted to, could I drink compound X?

No

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