Question

1(i) At what temperature, do solid ice and liquid water co-exist together?​

Answer 1

Explanation:

approximately 273.1575 K

Triple point of water

Answer 2

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Triple point of water

The temperature at which solid ice and liquid water coexist is 0.01 °C.

The scientific term for this is called the triple point of water, because not only solid ice and liquid water but also water vapor exists together at this temperature.

There is also a technical term for this existence of all the three states of water called thermodynamic equilibrium.