How does a wet cloth dry in the sun. For the water to evaporate the temp must reach 100 deg C,?

Question

how do wet clothes become dry

Answer 1

the water to boil needs 100 degrees temp not to evaporate. Evaporation is a different phenomenon. Boiling is a process where we are supplying heat energy to the water molecules to reach gaseous state. but evaporation is a natural and slow phenomenon, where in water molecules on the surface get mixed up with the air and move along. So, the clothes dries off even inside the room. It dries off fast in sun because hot air has less density and can carry more water molecules with them.

This can be explained in a different way as you see in a rainy day the clothes would dry late but will dry. The reason is the temperature is less and the humidity is high. On a normal day the humidity is less and the air can accommodate more water molecules into it. thus the clothes dry by leaving the water molecules into the air and not by boiling the water.

Answer 2

Water needs 100 C to boil, not to evaporate. Evaporation can take place at any temperature above 0 C, EVEN AT 1 C. But the rate of evaporation will increase with the increase in temperature. As the sun's rays are hot, the rate of evaporaton will be highest and the clothes will dry faster. That is why we put the wet clothes in sun.

Answer 3

The wet cloth doesn't even need the sun. At room temperature (in the dark!) the vapor pressure of water is about 25mmHg (millimeters of mercury). That means that if you leave the cloth out in the open, all of the water will evaporate.

In fact, you can "boil" water below the freezing point. Try this experiment: Put a tray of ice cubes in the freezer compartment and leave the tray there several weeks. When you come back, the ice cubes will have shrunk to little pebbles. The "water" "boiled" away, because the vapor pressure of water has a finite value at any temperature, no matter how low.

Answer 4

The temperature of a substance is just the average kinetic energy of the molecules in that substance. Not all of the molecules are at the average, though. Some are a lot more, and some are a lot less. The molecules at the high end of the kinetic energy distribution (those with a lot more than the average) have enough energy to jump from the liquid to the gaseous phase. The hotter it is, the more molecules have enough energy to make the leap. If something is boiling, then most of the molecules have enough energy to make the leap.

Answer 5

Wet Cloth

Answer 6

No, for water to boil and vaporize it must reach 100 deg C.
Water evaporates because energy transfer to the water molecules causes some of them to absorb enough energy to change state, but because of the lesser amount of energy they are recieving it takes longer to accumulate enough for all the individual molecules to change state.

Answer 7

no, water evaporates even at room temp. 100 deg C is just its bioling point: the temperature at which it turns into vapour QUICKLY. evaporation takes place at all temperatures, but much slower than boiling

Answer 8

even at low temperatures water evaporates as vapour and is called evaporation. after 100 degree centigrade is reached water is converted to steam and not vapour.
rate of evaporation is directly porportional to the temperature so as the temperature rises the rate of evaporation also rises..

Answer 9

did u notice when a plate is placed over the pot then after some time u notice droplets of water......this is why?due to the concept of vapour pressure..there is no heat given to the water...............
so,when the clothes are made to dry in the sun due to additional amount of heat they escape from the surface of the cloth..............
so.they dry up.

Answer 10

a little warm help to clothes become dry with help of sun and wind