Question

How are the conditions at which phases are in equilibrium represented on a phase diagram?

Answer 1

How are the conditions at which phases are in equilibrium represented on a phase diagram?

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Along the line between liquid and solid, the melting temperatures for different pressures can be found. The junction of the three curves, called the triple point, represents the unique conditions under which all three phases exist in equilibrium together. Phase diagrams are specific for each substance and mixture.