Consider the phase diagram shown here. A sample of the substance in the phase diagram is initially at 120℃ and 925 mmHg.

Consider the phase diagram shown here. A sample of the substance in the phase diagram is initially at 120℃ and 925 mmHg. What phase transition occurs when a substance increases temperature at constant pressure?

Liquid Solid 885 mmHg Gas 145 °C Temperature

gas to solid

liquid to gas

liquid to solid

solid to liquid

Solutions

Expert Solution

From the phase diagram, it is quite clear that, at 120 °C and 925 mm Hg, the substance is pure solid.
On increasing temperature keeping pressure constant, the substance moves in a horizontal axis parallel to temperature axis, undergoes a phase transition from solid to liquid.

queen_honey_blossom answered 1 year ago

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