Find the latent heat of fusion, Lf, according to Lf = q ÷ m by dividing the heat, q, absorbed by the ice , as determined in step 3, by the mass of ice, m, determined in step 4. In this case, Lf = q / m = 2293 J ÷ 7.0 g = 328 J/g. Compare your experimental result to the accepted value of 333.5 J/g.
What is the unit for latent heat?
The latent heat is normally expressed as the amount of heat (in units of joules or calories ) per mole or unit mass of the substance undergoing a change of state.
What is the formula for calculating latent heat?
The specific latent heat (L) of a material... is a measure of the heat energy (Q) per mass (m) released or absorbed during a phase change. is defined through the formula Q = mL. is often just called the “latent heat” of the material.
What are the units of specific latent heat?
specific latent heat is measured in joules per kilogram (J/kg)
What is the latent heat of fusion of ice?
A total of 334 J of energy are required to melt 1 g of ice at 0°C, which is called the latent heat of melting. At 0°C, liquid water has 334 J g − 1 more energy than ice at the same temperature. This energy is released when the liquid water subsequently freezes, and it is called the latent heat of fusion.
What is latent heat and its SI unit?
The specific latent heat (L) of a material... is a measure of the heat energy (Q) per mass (m) released or absorbed during a phase change. ... is often just called the “latent heat” of the material. uses the SI unit joule per kilogram [J/kg] .
What is latent heat Short answer?
latent heat, energy absorbed or released by a substance during a change in its physical state (phase) that occurs without changing its temperature. ... The latent heat is normally expressed as the amount of heat (in units of joules or calories) per mole or unit mass of the substance undergoing a change of state.
What is specific latent heat of fusion in physics?
The specific latent heat of a substance is the amount of energy needed to change the state of 1 kg of the substance without changing its temperature. Each substance has two specific latent heats: latent heat of fusion ( the amount of energy needed to freeze or melt the substance at its melting point )
How do you find the specific heat of latent heat of ice and water?
Calculate the heat, q, removed from the water according to the equation q = mc(deltaT) , where m and deltaT represent the mass and temperature change of the water, respectively, and c represents water’s specific heat capacity, or 4.184 joules per gram per degree Celsius, or 4.187 J/g-C.
What is the specific latent heat of fusion of water?
| Substance Specific latent heat of fusion (kJ/kg) Specific latent heat of vaporisation (kJ/kg) | Water 334 2,260 | Lead 22.4 855 | Oxygen 13.9 213 |
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What is specific latent heat?
The specific latent heat of a substance is the amount of energy needed to change the state of 1 kg of the substance without changing its temperature .
Why is it called latent heat of fusion?
The ‘enthalpy’ of fusion is a latent heat, because, while melting, the heat energy needed to change the substance from solid to liquid at atmospheric pressure is latent heat of fusion, as the temperature remains constant during the process.
What is the latent heat of fusion of ice in J kg?
The latent heat of fusion of ice is 33600 J/K . Latent heat of fusion of ice is the amount of heat required to melt a unit mass of ice from the solid-state to the liquid state.
What are three types of latent heat?
- Latent Heat of Fusion,
- Latent Heat of Vaporization,
- Latent Heat of Sublimation.
