Question

The melting point of pure water (solid state) is:
A.$0^\circ C$
B.$100^\circ C$
C.$32^\circ C$
D.0 K

Answer 1

The melting point of solid water is the same as the freezing point of the liquid water. The melting point of the water depends on pressure, so there is not a one temperature that can be considered the melting point of water. The melting point of pure water ice at 1 atmosphere of pressure is very close to $0^\circ C$ ,

Complete step by step answer:
Water can exist in different states and ice is one of the forms of water that is solid. Water's melting point is not always the same as the water's freezing point. The melting point of water is the temperature at which the water changes from solid ice into the liquid form of water. At this temperature, the solid and liquid phase of water are in equilibrium. The melting point of the water depends on pressure, so there is not a one temperature that can be considered the melting point of water. The melting point of pure water ice at 1 atmosphere of pressure is very close to $0^\circ C$ , which is $32^\circ F$ or 273.15 K. When salt or other substances are added to ice, they lower the melting point of ice.
Pure water transforms from solid to liquid state or from liquid to solid state occurs at $32^\circ F$ also (0°C) at sea level. This temperature is also known as the melting point of water and when temperature rises, it causes ice to melt and also changes from solid water to liquid water.
Therefore, to conclude the melting point of pure water (solid state) is zero degree Celsius or $0^\circ C$ .

Therefore, the correct answer is option (A).

Note: The melting point of solid Water is the temperature at which it changes its solid form to liquid form at atmospheric temperature is $0^\circ C$ . This brings us to the conclusion that the melting point of the ice, that is water which is in solid form is zero degree Celsius $(0^\circ C)$ .