How do you calculate latent heat of water?

Latent heat calculation The specific latent heat is different for solid to liquid transition and liquid to gas transition. For example, if we want to turn 20 g of ice into water we need Q = 20 g * 334 kJ/kg = 6680 J of energy. To turn the same amount of water into vapor we need Q = 45294 J .

How do you calculate the latent heat of fusion of water?

The heat capacity is the substance’s resistance to changing its temperature. The heat transferred is q=mcΔT q = m c Δ T , which makes the heat of fusion equation the mcΔT=Lf∗m m c Δ T = L f ∗ m . Water’s latent heat of fusion is equal to 334 kJ/kg, 334 kJ is required to change 1 kilogram of water from solid to liquid.

How much of latent heat is water?

For example, the latent heat of vaporization of water is 540 cal/g and the latent heat of freezing of water is 80 cal/g.

What is the latent heat of vaporization of water in J kg?

The latent heat of vaporization for water is 22.6 x 10^5 J/kg. This means that 22.6 x 10^5 J of heat energy must be added to turn one kilogram of water from liquid to gas at 100 degrees Celsius.

What is heat of vaporization of water?

Heat of vaporization of water That is, water has a high heat of vaporization, the amount of energy needed to change one gram of a liquid substance to a gas at constant temperature. Water’s heat of vaporization is around 540 cal/g at 100 °C, water’s boiling point.

How much heat is gained when water is 5kg?

Heat is a form of energy that is transferred from systems having high temperature to low temperature. Hence, we require 1680 kJ of energy to heat 5 kg of water from $ 20^\circ C\; $ to $ 100^\circ C\; $ . So, the correct choice is option (A).

How to calculate latent heat?

Latent heat calculation 1 m [kg] is the mass of the body, 2 L [kJ/kg] is the specific latent heat, 3 Q [kJ] is the heat absorbed or released depending on the direction of the transition. More

What happens to latent heat when water is turned into vapor?

This process of turning water into vapor takes some energy. This is the latent heat. Once all the water is turned into vapor, a further transfer of heat will simply increase the temperature. Condensation is the reverse process to the vaporization where gas turns into liquid.

What are the products of latent heat of vaporization?

Latent heat of vaporization of fluids – alcohol, ether, nitrogen, water and more Product Latent Heat of Evaporation *) – he – Latent Heat of Evaporation *) – he – (kJ/kg) (Btu/lb) Acetic acid 402 173 Acetone 518 223 Alcohol 896 385

What is the difference between latent heat and condensation?

This is the latent heat. Once all the water is turned into vapor, a further transfer of heat will simply increase the temperature. Condensation is the reverse process to the vaporization where gas turns into liquid.