Which of the following definitions best describes the term triple point? In equi

Question

Which of the following definitions best describes the term triple point? In equilibrium with the liquid phase, the pressure exerted by a gas A specific temperature and pressure at which the liquid and gas phases of a substance have the same density and are indistinguishable from each other A substance at conditions above its critical temperature and pressure, where the liquid and vapor phases are indistinguishable and have some characteristics of both a liquid and a gas The temperature and pressure at which all three phases of a substance coexist. Under these o conditions, freezing and melting, boiling and liquefaction, and sublimation and deposition all proceed at the same rate. Pressure and temperature values on a phase diagram where two phases of a substance coexist

Explanation / Answer

Triple point is the temperature and pressure at which the solid, liquid, and vapour phases of a pure substance can coexist in equilibrium.

So the correct definition is

The temp[erature and pressure at which all the three phases of a substance coexist.Under these conditions,freezing and melting point , boiling and liquefication and sublimation and decomposition all proceed at the same rate.

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