What is the saturation temperature of water at 100 kPa?

To determine the saturation temperature of water at 100 kPa, it's important to refer to steam tables or phase diagrams typically used in thermodynamics and refrigeration. Saturation temperature is the temperature at which a liquid turns into vapor at a given pressure.

At 100 kPa (which is approximately 1 bar), the saturation temperature of water is typically around 100°C. This is a well-known point where water boils at atmospheric pressure (considered at sea level, roughly 101.325 kPa); however, when the pressure drops slightly to 100 kPa, the boiling or saturation temperature remains nearly the same, still close to 100°C.

The other temperatures listed—120°C, 125°C, and 117°C—represent values that are higher than the saturation temperature at that pressure. These would correspond to higher pressure scenarios and would indicate superheated steam rather than saturated conditions. Thus, based on these considerations, the saturation temperature at 100 kPa is indeed 100°C, confirming that the correct answer reflects the well-established data concerning the boiling point of water at that pressure.