Login

define evaporation. explain various factors effecting evaporation..? plz answer,,!!

Evaporation is a surface phenomenon in which the particles at the surface gain enough energy to turn into vapour

FACTORS AFFECTING EVAPORATION
The rate of evaporation increases with–
• An increase of surface area:
We know that evaporation is a surface phenomenon. If the surface area is increased,
the rate of evaporation increases. For example, while putting clothes for drying up
we spread them out.
• An increase of temperature:
With the increase of temperature, more number of particles get enough kinetic
energy to go into the vapour state.
• A decrease in humidity:
Humidity is the amount of water vapour present in air. The air around us cannot hold
more than a definite amount of water vapour at a given temperature. If the amount
of water in air is already high, the rate of evaporation decreases.
• An increase in wind speed:
It is a common observation that clothes dry faster on a windy day. With the increase
in wind speed, the particles of water vapour move away with the wind, decreasing
the amount of water vapour in the surrounding
  • 39
View Full Answer

Evaporation is a surface phenomenon in which the particles at the surface gain enough energy to turn into vapour

There are a number of factors that affect the rate of evaporation. Some of them are-
� Temperature-The higher the temperature, the higher is the rate of evaporation. When the temperature of water is increased the water molecules gain more energy, move faster and escape at a faster rate.
� Pressure-If pressure is applied on the surface of a liquid, evaporation is hindered, consider for example, the case of a pressure cooker.
� Surface area-Increase in the surface area exposed assists evaporation; for instance, a wet cloth spread out dries faster than when folded.
� Concentration of the substance evaporating in the air-If the air already has a higher concentration of the substance evaporating, then the given substance will evaporate more slowly.
� Concentration of other substance in the air- If the air is already saturated with other substances, it can have a lower capacity for the substance evaporating.
� Concentration of other substances in the liquid- If the liquid contains other substances, it will have a lower capacity for evaporation
  • 6

The process of a liquid changing into vapour(or gas)even below its boiling point is called evaporation.Evaporation of a liquid can take place even at room temperature,though it is faster at heigher temeratures.Whatever be the temperature at which evaporation takes place,the latent heat of vaporisation must be supplied whenever a liquid changes into vapour(or gas).

FACTORS AFFECTING EVAPORATION:-

The evaporation of liquid depends mainly on on the following factors:

(1) Temperature

(2) Surface area

(3) Humidity

(4) Wind speed

I hope that this answer will be helpfull for you.

  • 21

the process in which water changes into vapours is called evaporation.

factors effecting evaporation are:

1) Humidity

2) Wind speed

3) Temperature

4) Surface area

  • 2

Factors affecting evapouration are

  1. Increase in wind sped.
  2. Increase in surface area.
  3. Decrease in humidity.
  4. Increase in temperature.
  • 3

 "The right to education act is a realistic and achievable goal that will change the face of education in India." debate, against topic.. 
plz reply fast guys!

  • -3
evaporation is a process of conversion of liquids into gases below its boiling point without rise in temperature
  • -1
Evaporation is a surface phenomenon in which the particles at the surface gain enough energy to turn into vapour FACTORS AFFECTING EVAPORATION The rate of evaporation increases with– • An increase of surface area: We know that evaporation is a surface phenomenon. If the surface area is increased, the rate of evaporation increases. For example, while putting clothes for drying up we spread them out. • An increase of temperature: With the increase of temperature, more number of particles get enough kinetic energy to go into the vapour state. • A decrease in humidity: Humidity is the amount of water vapour present in air. The air around us cannot hold more than a definite amount of water vapour at a given temperature. If the amount of water in air is already high, the rate of evaporation decreases. • An increase in wind speed: It is a common observation that clothes dry faster on a windy day. With the increase in wind speed, the particles of water vapour move away with the wind, decreasing the amount of water vapour in the surrounding
  • -1
The phenomena of change of a liquid into vapours at ANY temperature BELOW the boiling point is called EVAPORATION
  • -1

6 important factors that affect evaporation are :

1. Wind assists evaporation; for example in clothes dry faster under a fan.

2. Heat assists evaporation; for example, in summer clothes dry faster than in winter.

3. Increase in surface area exposed assists evaporation; for instance, a wet cloth spread out dries faster than when folded.

4. Dryness assists evaporation; for instance, clothes dry faster in summer than during the monsoon when the air is humid.

5. Rate of evaporation depends upon the nature of the liquid; for example, petrol evaporates faster than water.

6. Vapor pressure: if pressure is applied on the surface of a liquid, evaporation is hindered; consider, for example, the case of a pressure cooker.

  • 0
The process of a liquid changing into vapour even below its boiling point is called evaporation.
  • 2
Thanks it was usefull
  • 0
I don't know
  • 0
The phenomenon of change of liquid into vapour at any temperature below its boiling point is called evaporation. Evaporation takes place at all temperatures
  • 0
What are you looking for?