Write a short note on the triple point of water.

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Solution

The triple point of a substance is the temperature and pressure at which the three phases (gas, liquid, and solid) of that substance coexist in thermodynamic equilibrium.

The triple point of water is used to define the Kelvin(K), the base unit of thermodynamic temperature in the International System of Units (SI). The triple point of water is $273.16 K, {0.01}^{\circ} C, o r {32.018}^{\circ} F$ .

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