Solid Triple Point Normal Melting point
A 0.91atm,124C 108C
B 0.35atm, -17C 50C
C 0.0072atm,88C 89C
which solid will melt under applied pressure?
A 0.91atm,124C 108C
B 0.35atm, -17C 50C
C 0.0072atm,88C 89C
which solid will melt under applied pressure?
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I'll answer the question with the information given, assuming I'm reading this information correctly. However, the information is wildly unrealistic for solids A and B, so I'm not sure this makes any sense. Here goes,
Solid A melts at 124 °C at 0.91 atm and at 1 atm (the pressure for the normal melting point), it melts at 108 °C. Clearly, raising the pressure lowered the melting point and if the temperature was high enough (> 108 °C), solid A would melt under applied pressure. What is crazy is that no known solid has a melting point that is anywhere close to that strongly dependent on pressure!
Solid B is even crazier. The melting point goes from –17 °C at 0.35 atm to 50 °C at 1 atm. Applying pressure raises its melting point, so obviously applying pressure won't melt it - quite the opposite, raising the pressure will freeze it. (Again, it's crazy. Not even boiling points are that sensitive to pressure.)
Solid C is close to normal. The melting point rises a little bit on going from 0.0072 atm to 1 atm. It won't melt under applied pressure.
Are you sure the data given is correct?
Solid A melts at 124 °C at 0.91 atm and at 1 atm (the pressure for the normal melting point), it melts at 108 °C. Clearly, raising the pressure lowered the melting point and if the temperature was high enough (> 108 °C), solid A would melt under applied pressure. What is crazy is that no known solid has a melting point that is anywhere close to that strongly dependent on pressure!
Solid B is even crazier. The melting point goes from –17 °C at 0.35 atm to 50 °C at 1 atm. Applying pressure raises its melting point, so obviously applying pressure won't melt it - quite the opposite, raising the pressure will freeze it. (Again, it's crazy. Not even boiling points are that sensitive to pressure.)
Solid C is close to normal. The melting point rises a little bit on going from 0.0072 atm to 1 atm. It won't melt under applied pressure.
Are you sure the data given is correct?