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H2O at 0°C is Ice. There is a considerable gap between Ice and Water. After 0°C if you increase the temperature by 0.1°C, that is at 273.1K the equlibrium state occures. This state is called the 'Triple point of water'. This is where water, ice and surprisingly water vapour. After this state if you increase the temp by any amount H20 becomes water. Hope this ...

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At the transition point between two phases, both states are thermodynamically (meta)stable. The actual composition, however, is kinetically determined and will depend on the history of how you got to 0$^\circ$C and how long you wait. For instance, if pure water (no impurities and in a container that does not induce heterogeneous nucleation) is cooled slowly ...

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I'm assuming 1 atm pressure. It will be a mix of solid and liquid. It takes a certain amount of thermal energy to change the state of water. Until that amount of energy is reached, it will be a mixture of solid and liquid, both at 0°C. With more energy, a higher portion will be water. Once all of it is liquid, any further energy addition will raise its ...

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You need more information to tell the state. Actually, exactly two more values, the pressure and the volume. With these three you have a fixed point in the phase diagram: But even if you have a fixed point in the diagram, you can still reach a two-phase sitation. Then e.g. water and ice exists at the same time in fitting fractions of the total mass. What ...

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