The following experiment is carried out: 10 moles of a gas are placed in a piston equipped with a cylinder device so we can increase or reduce the pressure upon compression or expansion. During all the experimental steps, we will keep the experimental setup at a constant temperature of T = 60°C. The initial pressure is 0.2 bar and the next steps are followed out: Step 1: The gas is compressed to P = 0.7 bar, where we see that condensation begins. Step 2: At the end of the condensation, the volume is 0.80 L. Equipment readings tell us that 495 kJ of heat was removed during the condensation. Step 3: The liquid is then compressed to P = 13.5 bar and V = 0.77 L, where we see that solids begin to form. Step 4: At the end of the conversion of all the liquid into solid, the volume is 0.72 L and we measured 25 kJ of heat removed during this step. Use the above experimental observations to estimate each of the following properties for this compound. A) The isothermal compressibility of the liquid phase B) The normal boiling point C) The normal melting point (Comment on the accuracy of your calculations) D) The triple point
The following experiment is carried out: 10 moles of a gas are placed in a piston equipped with a
cylinder device so we can increase or reduce the pressure upon compression or expansion. During
all the experimental steps, we will keep the experimental setup at a constant temperature of T =
60°C. The initial pressure is 0.2 bar and the next steps are followed out:
Step 1: The gas is compressed to P = 0.7 bar, where we see that condensation begins.
Step 2: At the end of the condensation, the volume is 0.80 L. Equipment readings tell us that 495
kJ of heat was removed during the condensation.
Step 3: The liquid is then compressed to P = 13.5 bar and V = 0.77 L, where we see that solids
begin to form.
Step 4: At the end of the conversion of all the liquid into solid, the volume is 0.72 L and we
measured 25 kJ of heat removed during this step.
Use the above experimental observations to estimate each of the following properties for this compound.
A) The isothermal compressibility of the liquid phase
B) The normal boiling point
C) The normal melting point (Comment on the accuracy of your calculations)
D) The triple point
You must state all your assumptions clearly.
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