what is the temperture in degree that is needed for water to evaporate into the air?

Answer 1

Thye boiling point of water is 100 Degrees Celcius.

Answer 2

Water will evaporate into the air at any temperature.
Even if the temperature is below freezing and we're talking about solid water (ice), it will still evaporate into the air. Actually, this type of evaporation is called "sublimation" (going directly from the solid state to the gaseous state; it occurs at temperatures too low to permit the liquid state).

As the water's temperature gets lower, its molecules will have less tendency to evaporate. In physical terms, water's "vapor pressure" decreases with temperature.

Similarly, if the water increases in temperature, its vapor pressure increases. At 100 degrees Celsius, the vapor pressure is equal to normal air pressure (at sea level), so the water vaporizes as quickly as it can absorb the "heat of vaporization" required to make it a gas.

One other item that might be of interest to you. When you see clouds of fog above a pond (or clouds of what we call steam over a pot of hot or boiling water), here's what is happening:

The body of water is warm enough to cause molecules of water to evaporate and create relatively humid air just above the water. But as this humid air spreads out, it mixes with cooler air further above the water, which cools it down to a temperature at which the water can't maintain such a high vapor pressure (i.e., the humidity can't be that high at the reduced temperature). So SOME of the water condenses into tiny water droplets floating in the air as fog (or a cloud of so-called steam).

Hope that helps you understand a lot of the things you will observe in the world of water.

Answer 3

Since your question is about weather, at the DEW POINT, individual water molecules are transitioning between vapor in air and liquid, but the net effect is balanced. Any temperature above this will result in net evaporation.

Answer 4

100 degrees centigrade for boiling and conversion to vapour. But if the temeperature of water is below the atmospheric temperature the waterw ill evaporate into air.

Answer 5

Water will evaporate at *any* temperature (so long as the air isn't already saturated with water vapor). But it's real slow below 0°C.


Doug

Answer 6

100 C, 212 F

Answer 7

Water evaporates at all temperatures (when it's frozen too).

Higher temperature means quicker evaporation.

Answer 8

100 degree + 540 cals/gram

Answer 9

simply 33 degrees farenheit. If it is not in a solid form it is capableof evaproating. It will be slow but it will be gone in time.

Answer 10

It depends on humidity and atmospheric pressure.