Define triple point of a substance - Physics -

Question

Define triple point of a substance

Neelam Dubey · Accepted Answer

Dear student In physics, the triple point is the temperature and
pressure at which solid, liquid, and vapour phases of a particular
substance coexist in equilibrium Or we can say that:- The
temperature and pressure at which a substance can exist in
equilibrium in the liquid, solid, and gaseous states The triple
point of pure water is at 0 01Â°C (273 16K, 32
01Â°F) and 4 58 mm (611 2Pa) of mercury and is used to
calibrate thermometers Regards