📝 Multiple Choice Question
General-science
.........of a substance is the temperature and pressure at which three phases (gas, liquid, and soli(D) of that substance may coexist in thermodynamic equilibrium.
A
Tri-state
B
Amphibious
C
Triple-point
D
Allotropic
Explanation
The triple point of a chemical substance is the unique, precise set of temperature and pressure conditions where its solid, liquid, and gaseous phases exist simultaneously in perfect thermodynamic equilibrium. For example, water's exact triple point is fundamentally used to define the Kelvin temperature scale.
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