Question

What is triple point? Give examples with explanation.

Answer 1

In thermodynamics, 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.[1] For example, the triple point of mercury occurs at a temperature of −38.83440 °C and a pressure of 0.2 mPa

Answer 2

Triple point is the temperature at which a substance can exist in all the states of matter i.e.., in solid, liquid, gaseous state.
For example the triple point of water is 0.01°C which means that at that temperature water can exist as ice, water and water vapour

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