Evaporation depends on
the amount of water vapour present in the air (humidity)
. If the amount of water vapour present in the air is less, then evaporation is more. On a hot dry day, the amount of water vapour present in the air is less.
What are the factors on which evaporation depends Class 9?
- Temperature.
- Surface area.
- Humidity.
- Wind speed.
What evaporation depends on?
Evaporation requires
heat (or air movement above the sample)
to drive off a volatile solvent.
What are the four factors affecting evaporation?
Liquids changes into vapour by the process of evaporation. The factors that affect the rate of evaporation of liquids are
temperature, surface area, wind speed, and humidity
.
On what factors evaporation depends upon?
Evaporation rate increases with
increase in temperature
since it is an endothermic process. High humidity decreases evaporation, it is because the environment is saturated and already contains moisture. So, we can say that evaporation depends on all three given options, i.e. surface area, temperature, humidity.
Does evaporation depends upon the nature of the liquid?
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.
What is evaporation and its factor?
Evaporation is a type of vaporization that occurs on the surface of a liquid as it changes into the gas phase. The rate of evaporation is affected by, (1) Temperature:
Evaporation increases with an increase in temperature
. (2) Surface Area: Evaporation increases with an increase in surface area.
What are the three factors affecting the rate of evaporation?
- temperature of the liquid. A cup of hot water will evaporate more quickly than a cup of cold water.
- exposed surface area of the liquid. …
- presence or absence of other substances in the liquid. …
- air movement. …
- concentration of the evaporating substance in the air.
What is evaporation Class 9 with example?
The
process of liquid changing into vapours even below its boiling point
is called as evaporation. Some particles in a liquid always have more kinetic energy than the others. … Thus, the fast moving particles of a liquid are constantly escaping from the liquid to form vapour.
Which one of the following is a disadvantage of evaporation?
The main disadvantages of evaporation are
high capital, energy and maintenance costs
; large size of apparatus; enhanced temperatures; corrosion problems; and scaling or foaming.
What is evaporation in simple words?
Evaporation is the
process by which a liquid turns into a gas
. It is also one of the three main steps in the global water cycle.
Which factor does not affect evaporation?
Answer: (4)
Insoluble heavy impurities
The evaporation rate is dependent on certain variables such as temperature, surface area, wind speed, etc. But not depend on the mixture of absolute heavy impurities.
Does evaporation increase with temperature?
Although water can evaporate at low temperatures, the
rate of evaporation increases as the temperature increases
. This makes sense because at higher temperatures, more molecules are moving faster; therefore, it is more likely for a molecule to have enough energy to break away from the liquid to become a gas.
What is evaporation and examples?
Evaporation is defined as the process in which the state of water from liquid to gaseous or to vapour state takes place. …
The melting of an ice cube
is an example of evaporation. Evaporation of acetone which is used for removing nail paint is another everyday example of evaporation.
What is rate of evaporation?
Evaporation rate is known as the
rate at which a material vaporizes (or evaporates)
, meaning it will change from liquid to vapor when compared to the rate of vaporization of a specific known material. This quantity represents a ratio, which means it is unitless.
