Knowledge What is the Specific Heat Capacity for Melting? (4 Key Points Explained)
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Tech Team · Kintek Solution

Updated 2 months ago

What is the Specific Heat Capacity for Melting? (4 Key Points Explained)

The specific heat capacity for melting, also known as the latent heat of fusion, is the amount of heat energy required to change one unit of a substance from solid to liquid state without a change in temperature.

The provided references indicate that the specific heat capacity for melting is -79.7 cal/g or -330,000 J/kg.

This value represents the energy absorbed by the substance during melting.

What is the Specific Heat Capacity for Melting? (4 Key Points Explained)

What is the Specific Heat Capacity for Melting? (4 Key Points Explained)

1. Definition of Specific Heat Capacity for Melting

The specific heat capacity for melting, or latent heat of fusion, is the amount of heat energy needed to transform one unit of a substance from solid to liquid without altering its temperature.

2. Energy Values for Melting

The specific heat capacity for melting is -79.7 cal/g or -330,000 J/kg.

This value signifies the energy absorbed by the substance during the melting process.

3. Process of Melting

When a substance is heated, its temperature rises due to the absorption of heat energy.

At the melting point, the absorbed heat energy is used to break the intermolecular bonds within the solid substance, causing it to change its state from solid to liquid.

This process requires a specific amount of energy, which is the latent heat of fusion.

In the case mentioned, -79.7 cal/g or -330,000 J/kg is the amount of energy required to melt one gram or one kilogram of the substance, respectively.

4. Energy Exchange During Melting and Freezing

It is important to note that the negative sign indicates that the energy is absorbed by the substance during the melting process.

Conversely, when the substance freezes, the same amount of energy is released, which is represented by a positive value (+79.7 cal/g or +330,000 J/kg).

This energy exchange is crucial in understanding the thermodynamics of phase changes and is essential in various industrial and scientific applications, such as metallurgy and materials science.

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