0
The application of heat causes an increase in the evaporation rate of a substance because the added thermal energy will "offset" cooling that results from the evaporation. Let's look at this just a bit more closely to get a handle on things by considering water in a pan.
Water molecules in a pan will be bumping around against each other in the liquid. They have some given thermal energy. The molecules tend to "stick together" and stay in the pan in the form of a liquid, but some of the water molecules at the surface will "jump out" or "escape" the liquid and become a vapor. When they do this, they take thermal energy with them in making their change of state from liquid to gas. This is evaporation. The result is that the water in the pan will cool down. Let's jump aside for a moment.
If you wet your finger and blow on it, you can feel your finger cooling down. Or if you get out of a pool and a breeze swirls around you, you immediately feel cooler. Evaporation and cooling in action, and you can't miss the effect. Even a blind person could see what is going on. Now back to the example.
If we consider the water in the pan, we see it cooling down, and this means that the water has less thermal energy in it. Less thermal energy in the water translates into fewer molecules of water at the surface being able to snatch enough thermal energy from the liquid to change state into a gas. The evaporation rate is slowing because the evaporating water strips thermal energy from the remaining water. Add some heat to the bottom of the pan, and this additional thermal energy will "offset" the loss of thermal energy due to evaporation. That heat may very well not only offset heat loss by evaporation, but it may easily add lots of thermal energy to the water and speed up the evaporation process. Think it through and it will make perfect sense.
What else can I help you with?
What happens to the speed of evaporation when the temperature of water is higher?
The speed of evaporation increase when the temperatre increase.
Speed of evaporation is a physical property of a liquid is that true or false?
Yes friend Des Dichado has stated so rightly.
What is the process by which particles escape from the surface of a non-boiling liquid?
Molecules speed up when they are turned from liquid into vapor. This is because they have more freedom to move around due to gaseous properties. Gases conform to the volume of the container, so they have more room to spread out, compared to liquids that do not have the ability to change volume
Heat energy can change a liquid to a gas during a process called?
The process of heat causing a liquid to change to a gas is called evaporation. The heat increases the speed of the particles within the substance, making them expand and diverge. Once this occurs, the increased energy within the particles causes the substance to change stages into a gas.
What factors can make evaporation happen faster when your clothes are hung out to dry?
Factors that can make evaporation happen faster when clothes are hung out to dry include higher temperature, lower humidity, increased air flow (e.g. windy conditions), and exposure to direct sunlight. Additionally, hanging clothes in a place with good ventilation can help speed up the evaporation process.
Does a twic card speed process on passport application?
No it does not.
Does a fan speed up the drying process of paint?
Yes, a fan can speed up the drying process of paint by increasing air circulation and evaporation.
How can I speed up the evaporation process of water when cooking?
To speed up the evaporation process of water when cooking, increase the temperature of the heat source, use a wider and shallower pan, and use a fan to circulate air around the cooking area.
What could cause water to evaporate more quickly?
An increase of the temperature increase the the speed of evaporation.
What are two factors that speed up evaporation?
High temperature and low humidity levels can speed up evaporation process by increasing the kinetic energy of the water molecules and reducing the amount of moisture in the air, respectively.
Does the wind slow down evaporation?
Adjust the temperature. This is very fidgety if you want evaporation to occur at a particular rate. But try lowering the temperature back towards the boiling point (for a liquid is 100 degrees celcius) but not below because the evaporation process will stop.
What happens to the speed of evaporation when the temperature of water is higher?
The speed of evaporation increase when the temperatre increase.
How do you speed up salt water evaporation?
To speed up salt water evaporation, increase the temperature of the water, increase the surface area exposed to air, and increase air circulation around the water. Additionally, using a low-humidity environment can also help accelerate the evaporation process.
What is the need for motor speed control?
There are many application of motor speed control. Mixer in a food process application needs to run at different speeds. Machine needs to run at different speeds according to required production speed. There are plenty of such application for energy saving etc.
How can I speed up the drying process of resin?
To speed up the drying process of resin, you can use a heat gun or a hair dryer on a low setting to gently apply heat to the resin. This will help the resin cure faster by accelerating the evaporation of moisture. Just be careful not to apply too much heat, as it can cause the resin to bubble or crack.
How does evaporation occur when washing clothes in a washing machine?
Evaporation occurs in a washing machine during the spin cycle, when the high-speed spinning of the drum causes water on wet clothes to be flung outwards. This exposes the wet clothes to air, which helps speed up the evaporation process, leaving the clothes to dry faster.
What controls the speed of evaporation inwater cycle?
The speed of evaporation in the water cycle is primarily influenced by temperature, humidity, air currents, and surface area of the water body. Higher temperatures, lower humidity, and increased surface area can result in faster evaporation rates. Additionally, wind can enhance the evaporation process by replacing the moist air above the water surface with drier air.
