Problem: Based on the phase diagram shown below, how will the melting point of the substance change if the pressure is increased above 1 atm? A)      The melting point will decrease. B)      The melting point will remain the same. C)      The melting point will increase. D)      The substance will not melt at pressures of 1 atm and above; instead, the solid sublimes to form the gas phase.

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Problem Details

Based on the phase diagram shown below, how will the melting point of the substance change if the pressure is increased above 1 atm?

A)      The melting point will decrease.

B)      The melting point will remain the same.

C)      The melting point will increase.

D)      The substance will not melt at pressures of 1 atm and above; instead, the solid sublimes to form the gas phase.

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