Question

Define triple point of water. Why is it unique?

Answer 1

Originally Answered: Define the triple point of water?Triple point: The temperature & pressure at which a substance exists simultaneously in three states solid, liquid & gas in equilibrium is called triple point of that substance. Triple point of each substance is always unique or fixed.

Answer 2

Defination :

➡The temprature and pressure at which fusion curve, the vapourisation curve and sublimation curve meet and all the three phases of a substance co exist is called the triple point.

Triple point of water :

➡The triple point of water is point where water in solid, liquid, and gaseous state co exist in equilibrium and this occurs only at unique temprature and pressure (273.16k and 6.11×10^-3).

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