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Question

What is the 'triple point' temperature of water in kelvin ?

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Solution

The 'triple point' temperature of water is 273 K. 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 273.16 K at 611.73 Pa. This is the basis of the Kelvin scale and it is equal to 0.01 oC, which is the freezing point of water.

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