the amount of heat required to change 1 kg of the substance from the solid to liquid phase without change in temperature

the amount of heat required to change 1 kg of the substance from the liquid to gaseous phase without change in temperature

the amount of heat required to change the temperature 1 kg of the substance by 1 degree Celcius

Latent heat of vaporization

Latent Heat Of Fusion

Latent Heat Of formation

Latent Heat Of reaction

Latent heat of fusion of ice is 0.333 kJ

The latent heat of fusion of ice is 33600 J/K.

The latent heat of fusion of ice 0 °C

The heat of fusion for ice is 100 °C

loses heat

gains heat

Liquid to Solid

Liquid to Gaseous

Solid to Liquid

Gaseous to Liquid

Evaporation is the process by which a liquid changes into vapours at a temperature below the boiling point of the liquid

Evaporation results in cooling as the liquid absorbs heat from its surroundings.

Take a wooden block and sprinkle some water over it.

Now, place a copper calorimeter over it.

Take some ether in the calorimeter and dip a hollow tube into it as shown

Blow air through the tubes so that the ether gets converted into its vapors.

Evaporation results in cooling as the liquid absorbs heat from its surroundings.

Take a wooden block and sprinkle some water over it.

Now, place a copper calorimeter over it.

Take some ether in the calorimeter and dip a hollow tube into it as shown

Blow air through the tubes so that the ether gets converted into its vapors.

Remove the calorimeter, what do you observe?

Take a wooden block and sprinkle some water over it.

Now, place a copper calorimeter over it.

Take some ether in the calorimeter and dip a hollow tube into it as shown

Blow air through the tubes so that the ether gets converted into its vapors.

Remove the calorimeter, what do you observe?

We observe that the water below the calorimeter freezes to form ice.

Now, place a copper calorimeter over it.

Take some ether in the calorimeter and dip a hollow tube into it as shown

Blow air through the tubes so that the ether gets converted into its vapors.

Remove the calorimeter, what do you observe?

We observe that the water below the calorimeter freezes to form ice.

This shows that ether has absorbed heat from water and also from its surroundings resulting in decrease in temperature of

the surroundings

Take some ether in the calorimeter and dip a hollow tube into it as shown

Blow air through the tubes so that the ether gets converted into its vapors.

Remove the calorimeter, what do you observe?

We observe that the water below the calorimeter freezes to form ice.

This shows that ether has absorbed heat from the water and also from its surroundings resulting in a decrease in the temperature of

the surroundings

Take some ether in the calorimeter and dip a hollow tube into it as shown

Blow air through the tubes so that the ether gets converted into its vapors.

Remove the calorimeter, what do you observe?

We observe that the water below the calorimeter freezes to form ice.

This shows that ether has absorbed heat from the water and also from its surroundings resulting in a decrease in the temperature of

the surroundings

Take some ether in the calorimeter and dip a hollow tube into it as shown

Blow air through the tubes so that the ether gets converted into its vapors.

Remove the calorimeter, what do you observe?

We observe that the water below the calorimeter freezes to form ice.

This shows that ether has absorbed heat from the water and also from its surroundings resulting in a decrease in the temperature of

the surroundings

Take some ether in the calorimeter and dip a hollow tube into it as shown

Blow air through the tubes so that the ether gets converted into its vapors.

Remove the calorimeter, what do you observe?

We observe that the water below the calorimeter freezes to form ice.

This shows that ether has absorbed heat from the water and also from its surroundings resulting in a decrease in the temperature of the surroundings

Take some ether in the calorimeter and dip a hollow tube into it as shown

We know that evaporation causes cooling.

We know that rate of evaporation is high when humidity in the

air is low.

We also know that rate of evaporation is high when the temperature of the surroundings is high.

so we can answer this question as

A desert cooler works because of evaporation

Evaporation causes cooling

We know that rate of evaporation is high when humidity in the

air is low.

We also know that rate of evaporation is high when the temperature of the surroundings is high.

so we can answer this question as

A desert cooler works because of evaporation

Evaporation causes cooling

Evaporation is increased at lower humidity in air.

We also know that rate of evaporation is high when the temperature of the surroundings is high.

so we can answer this question as

A desert cooler works because of evaporation

Evaporation causes cooling

Evaporation is increased at lower humidity in air.

and high temperature of the surroundings

so we can answer this question as

A desert cooler works because of evaporation

Evaporation causes cooling

Evaporation is increased at lower humidity in air.

and high temperature of the surroundings

On a hot dry day both a low humidity in air and high temperature of the surroundings are present

A desert cooler works because of evaporation

Evaporation causes cooling

Evaporation is increased at lower humidity in air.

and high temperature of the surroundings

On a hot dry day, both a low humidity in the air and high temperature of the surrounding are present

So on a hot dry day a desert cooler works or you can say

cools better.

Evaporation causes cooling

Evaporation is increased at lower humidity in the air.

and high temperature of the surroundings

On a hot dry day, both a low humidity in the air and high temperature of the surrounding is present

So on a hot dry day a desert cooler works or you can say

cools better.

Evaporation causes cooling

Evaporation is increased at lower humidity in the air.

and high temperature of the surroundings

On a hot dry day, both a low humidity in the air and high temperature of the surrounding is present

So on a hot dry day a desert cooler works or you can say

cools better.

Evaporation causes cooling

Evaporation is increased at lower humidity in the air.

and high temperature of the surroundings

On a hot dry day, both a low humidity in the air and high temperature of the surrounding is present

So on a hot dry day a desert cooler works or you can say

cools better.

Evaporation causes cooling

Evaporation is increased at lower humidity in the air.

and high temperature of the surroundings

On a hot dry day, both a low humidity in the air and high temperature of the surrounding is present

So on a hot dry day a desert cooler works or you can say

cools better.

Evaporation causes cooling

Evaporation is increased at lower humidity in the air.

and high temperature of the surroundings

On a hot dry day, both a low humidity in the air and high temperature of the surrounding is present

So on a hot dry day a desert cooler works or you can say

cools better.