What is the temperature of boiling water in kelvin scale ?
- 100 K
- 273K
- 373 K
- 78 k
1 Answer
The correct answer is C= 373 K
The boiling point of a liquid varies according to the applied pressure; the normal boiling point is the temperature at which the vapour pressure is equal to the standard sea-level atmospheric pressure (760 mm [29.92 inches] of mercury). At sea level, water boils at 100° C (212° F).Technically, boiling water means it has reached a temperature of 212 F and it's steaming. Bubbles can form well before this temperature point, as low as 160 F. Don't be deceived by pots that get hot very quickly around the sides and start to show little bubbles just around the edges.
It is not true that water can only get up to 212 degrees and as cold as 32 degrees. After water changes from a liquid to a gas (at 212 degrees Fahrenheit) it can actually heat up much hotter than that.
At standard atmospheric pressure (1 atmosphere = 0.101325 MPa), water boils at approximately 100 degrees Celsius. That is simply another way of saying that the vapor pressure of water at that temperature is 1 atmosphere.