[Solved] – Is Condensation Exothermic or Endothermic

Condensation Exothermic or Endothermic

Condensation is the process of water vapor turning into liquid water. It can happen when warm air meets cold surfaces, such as a glass of ice water on a hot day. When the temperature of the air gets too low, the water vapor in the air turns into tiny droplets of liquid water, which we see as fog or condensation on a window.

Condensation is a crucial part of the water cycle, and it plays an important role in our daily lives.

For example, condensation helps to keep our bodies cool when we sweat. In addition, condensation is responsible for the formation of clouds, which provide us with rain and snow. Without condensation, our world would be a very different place.

Before moving further, let’s answer:

Is Condensation Exothermic Or Endothermic?

Condensation is an exothermic process, meaning that it releases heat. When this happens, the heat is transferred from the gas molecules to the surrounding air, causing a change to liquid state.

The gaseous particles have more heat than liquid. On losing heat, the temperature becomes lower than the boiling point. Hence, they change their state into liquid.

To a particular situation, gas particles have a sufficient temperature. When a gas cools down enough, the heat energy becomes lower. This decreases the motion of small invisible particles. Thereafter, particles start attracting each other come close together, therefore, forms a liquid.

Condensation is also called the reverse of evaporation. In the process of evaporation, tiny particle gains of heat follow the endothermic process Whereas in condensation, particles lose heat exothermic process takes place.

phase changes

There are three types of phase changes: melting, freezing, and vaporization. In each of these processes, the energy of the system (the substance or mixture of substances undergoing a change in phase) changes.

All three processes are reversible; that is, they can occur in either direction, depending on the conditions.

For example, water can freeze when it is cooled below its freezing point (0°C), or it can melt when it is heated above its melting point (0°C).

Similarly, water can vaporize when it is heated above its boiling point (100°C), or it can condense when it is cooled below its boiling point.

The direction of a phase change is determined by the balance of kinetic and potential energies in the system. If the kinetic energy is greater than the potential energy, then the substance will change to the state with lower potential energy; if the potential energy is greater than the kinetic energy, then the substance will change to the state with higher potential energy.

When a substance changes phase, the molecules do not change their chemical identity; they simply rearrange themselves into a different pattern. For example, when water freezes, the H2O molecules do not change to H2 and O2; they simply arrange themselves into an orderly lattice. The same is true for all other phase changes.

Why is Condensation Exothermic?

It’s exothermic because when water vapor condenses, it releases heat. That’s because the molecules in water vapor are further apart than the molecules in liquid water. When water vapor turns into liquid water, the molecules get closer together and release energy in the form of heat.

That might not seem like much, but it can actually have a big impact on the environment. For example, condensation is one of the main ways that clouds form. And since clouds help to cool the Earth by reflecting sunlight back into space, condensation plays an important role in regulating our planet’s climate. So next time you see a cloud, remember that its formation is thanks to an exothermic reaction.

Condensation and Latent Heat

When water vapor condenses, it releases latent heat, which is the heat that was needed to change the state of the water vapor (from a gas to a liquid). This release of latent heat is what makes condensation an exothermic reaction. The internal energy of particles also plays a role in condensation.

When molecules of water vapor collide, they transfer some of their kinetic energy to each other. This transfer of kinetic energy causes the molecules to slow down and eventually become stationary, at which point they can form bonds with each other and turn into liquid water. So, both the latent heat and the internal energy of particles contribute to the process of condensation.

Effect of Temperature on Condensation

Condensation occurs when the air is saturated with water vapor and can no longer hold all of the water vapor molecules. As the temperature decreases, the air can hold less water vapor, and the relative humidity increases. When the relative humidity reaches 100%, condensation will occur. The temperature at which condensation occurs is called the dew point.

Condensation can occur on surfaces such as windows, car windshields, and bathroom mirrors. It can also form droplets on plants leaves or grass. Dew is a type of condensation that forms overnight when the ground cools down. Frost is another type of condensation that forms when the temperature hits freezing (32 degrees Fahrenheit).

Both dew and frost are examples of how condensation can have a significant impact on our environment.

Condensation as Exothermic Examples

Boiling Water: A most common example that justifies condensation as an exothermic process is steam vapours. When we boil water in the kitchen on a gas, initially, the temperature of the water is not high. 

Steadily as the boiling point rises up, water particles evaporate at a faster rate. On covering the boiling vessel with a lid cover, We can easily see the water droplets on the bottom surface of the vessel lid. This is all because the reason water particles on grasping heat evaporate and strike the cover lid.

On striking particles instantly loses some heat, which clearly shows the exothermic process. The water droplets fall back in the boiling water then again repeat the process evaporate on striking the cover lid, loses heat forms droplets.

Ice Cubes in Tumblr: Another best example is chilled Tumbler justifies condensation as an exothermic process. When we crush ice into small pieces and put them in a Tumbler fill it completely with ice cubes. After a few seconds, you will start seeing tiny water droplets around the surface of the tumbler. This is all because the reason that water vapours in the air around the tumbler suddenly lower the temperature when they come in outside contact.

To add on, water vapours outside the surface of the tumbler have more heat than the ice at zero degrees Celsius. water vapours change their state to tiny drops of liquid on a decrease of the kinetic energy of particles when coming in contact.

 This clearly shows condensation is an exothermic process

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References

http://www.chemistry.wustl.edu/~edudev/LabTutorials/Thermochem/Fridge.html

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