Note that this is a hypothetical scenario (umrea) so researching the web won\'t

Question

Note that this is a hypothetical scenario (umrea) so researching the web won't be of much help. Your own thinking is your best option! Its behaves under various environmental conditions is fairly well understood, such that the scientists have determined the following phase relationship diagram of X (shown below), which shows the occurrence of various phases (physical states) of X at various environmental conditions - in this case, pressure and temperature Let us assume that you have a containerlled with this strange material X in a pressurized chamber with cameras to see inside the chamber. Based on the ideas we discussed in class, study the diagram below and answer the following questions. 1. Not knowing what pressure the bottle is at, you observe that Solid A is slowly melting at o °C, you deduct that the pressure in the atm. Without changing the pressure, you decide to heat this bottle. While heating chamber has to be you observe that the liquid turns into a solid. The type of solid phase in the bottle is the temperature of the chamber during solidification of the liquid is (solidA/solidB) and oc 2. You decide to randomly change the pressure and the temperature of your system, unfortunately, your indicators failed, so you cannot tell what conditions your pressure chamber is set at. However you notice that in one such attempt, you observe solidB, Liquid and bubbles of gas all together. You instantly recognize that the chamber temperature has to be corresponding pressure is and the atm. 3. In the phase diagram below, the least dense phase would be while the phase with the highest density wouldd be

Explanation / Answer

1) If Solid A is melting, that means it is getting converted into liquid. Solid A gets converted into liquid at 50 atm pressure for 0 0C. Now at 50 atm, it is heated, the liquid with get converted to Solid B at 60 0C.

2) For Solid B, liquid and gas to exist together, the temperature has to 700C and the pressure has to be 30 atm.

3) It can be seen from phase diagram that the least dense phase is the gas phase with exists at high temperature and low pressure. The highest density phase would be Solid B. If we take verticals line at 45 0C and increase the pressure, the phase changes from gas to Solid A to liquid to finally Solid B, which exists at very high pressure, so it should have the highest density.

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