Specific latent heat essay example

Introduction: A substance requires energy to change from one phase state to another, or in other words, when it goes from either a solid to liquid or liquid to gas.

Latent heat examples in daily life

Starting a point A, the substance is in the solid state. During melting, heat absorbed by the solid is used to break the inter-molecular bonds between the molecules of solid substance. SI unit of latent heat is the joule J. The error of the carried out experiment was calculated to be Its unit is JKg James Prescott Joule characterised latent energy as the energy of interaction in a given configuration of particles, i. These latent heats are defined independently of the conceptual framework of thermodynamics. From points D to E thermal energy is overcoming the bonds, and the particles have enough kinetic energy to escape from the liquid state. The substance is entering the gas phase. And nope, we don't source our examples from our editing service! The temperature of a substance as heat is added to change the phase from the solid state to the gas state is shown below. Here are some ways our essay examples library can help you with your assignment: Brainstorm a strong, interesting topic Learn what works and what doesn't from the reader's perspective. There's a problem with this paper. Both sensible and latent heats are observed in many processes of transfer of energy in nature.

And nope, we don't source our examples from our editing service! Latent heat in terms of molecular behaviour Latent heat energy is absorbed or given out while a substance undergoes state change.

Since the heat energy supplied during the change in phase cannot be detected by a thermometer, this type of heat is referred to as latent heat.

Specific latent heat essay example

Get Essay The potential energy that is stored between molecules of the substance needs to be overcome by the kinetic energy of the motion of the particles before the substance can undergo the phase change. Adding heat brings the temperature up until the substance reaches the melting point, but the material is still a solid at point B. Such usage referred to latent heat of expansion and several other related latent heats. Phase changes are indicated by flat regions where heat energy is used to overcome attractive forces between molecules. Radiation Latent heat Latent heat of a substance is the amount of energy absorbed or released by the substance during a change in its physical state that occurs without changing its temperature. For more information on choosing credible sources for your paper, check out this blog post. It has to be noted that when liquid solidifies, the specific latent heat of fusion will be released. Using the formula for latent heat of fusion, the mass of the ice was calculated to be The large value of the enthalpy of condensation of water vapor is the reason that steam is a far more effective heating medium than boiling water, and is more hazardous. From points D to E thermal energy is overcoming the bonds, and the particles have enough kinetic energy to escape from the liquid state. Specific latent heat of fusion Specific latent heat of fusion, lf, of a substance is defined as the amount of heat required to change a unit mass of the substance from solid to liquid state , without any change in the temperature. As the ice melted, temperature of the system decreased. The average kinetic energy of the molecules does not change so that the temperature remains constant. When the substance transforms from the solid phase to the liquid phase, the latent heat of fusion must be used. Since the heat energy supplied during the change in phase cannot be detected by a thermometer, this type of heat is referred to as latent heat.

The minimum temperature of the ice water system was recorded. Both sensible and latent heats are observed in many processes of transfer of energy in nature. Such usage referred to latent heat of expansion and several other related latent heats.

specific latent heat formula

During vapourization, heat absorbed by the liquid is used to break the inter-molecular bonds completely between the molecules of liquid substance. Uncover new sources by reviewing other students' references and bibliographies Inspire new perspectives and arguments or counterarguments to address in your own essay Read our Academic Honor Code for more information on how to use and how not to use our library.

The unit for specific latent heat is JKg Reading example essays works the same way!

Latent heat of fusion of ice lab report discussion

The average kinetic energy of the molecules does not change so that the temperature remains constant. In this assignment, you will use a simple coffee cup calorimeter and a thermometer to measure the molar heat of fusion for water. The specific latent heat of fusion measures the amount of heat energy required to change 1 kg of a solid into a liquid. These names describe the direction of energy flow when changing from one phase to the next: from solid to liquid, and liquid to gas. At point D the temperature has reached the boiling point of the substance, but the still remain in the liquid state. Using the formula for latent heat of fusion, the mass of the ice was calculated to be The original usage of the term, as introduced by Black, was applied to systems that were intentionally held at constant temperature. The unit for specific latent heat is JKg You know how looking at a math problem similar to the one you're stuck on can help you get unstuck? Using the formula for latent heat of fusion, the mass of the ice was calculated to be Introduction: A substance requires energy to change from one phase state to another, or in other words, when it goes from either a solid to liquid or liquid to gas.

At the end of the level line at K, all of the liquid has been changed into gas. At the end of the straight line at K, all of the solid ice has melted into liquid.

specific latent heat of fusion of ice experiment

Purpose: The purpose of this lab was to use a calorimeter, water at room temperature, ice, and a Pasco GLS Explorer in combination with a known value of the latent heat of fusion to create and carry out an experiment to determine the mass of an unknown amount of ice.

Specific latent heat[ edit ] A specific latent heat L expresses the amount of energy in the form of heat Q required to completely effect a phase change of a unit of mass musually 1kg, of a substance as an intensive property : L.

Latent heat of vaporization experiment conclusion

These latent heats are defined independently of the conceptual framework of thermodynamics. The minimum temperature of the ice water system was recorded. Once again, as energy is added the energy goes into the kinetic energy of the particles raising the temperature. The original usage of the term, as introduced by Black, was applied to systems that were intentionally held at constant temperature. During melting, heat absorbed by the solid is used to break the inter-molecular bonds between the molecules of solid substance. Two common forms of latent heat are latent heat of fusion melting and latent heat of vaporization boiling. The energy required to change the phase of a substance is known as a latent heat; the word latent means hidden. The latent heat associated with melting a solid or freezing a liquid is called the latent heat of fusion Lf ; that associated with vapourizing a liquid or a solid or condensing a vapour is called the latent heat of vaporization Lv.
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Latent Heat of Fusion Essay