Class 9 Exam > Class 9 Questions > What is the latent heat of fusion?a)Heat requ...
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What is the latent heat of fusion?
- a)Heat required to change a liquid to a gas
- b)Heat required to change a gas to a liquid
- c)Heat required to change a solid to a liquid
- d)Heat required to change a liquid to a solid
Correct answer is option 'C'. Can you explain this answer?
Most Upvoted Answer
What is the latent heat of fusion?a)Heat required to change a liquid t...
The latent heat of fusion is the amount of heat energy required to change a solid into a liquid at atmospheric pressure and at its melting point.
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What is the latent heat of fusion?a)Heat required to change a liquid t...
Latent Heat of Fusion
The latent heat of fusion is the amount of heat energy required to change a substance from a solid to a liquid state without changing its temperature. It is a characteristic property of a substance and is specific to each material.
Definition
- The latent heat of fusion is defined as the heat required to change a solid into a liquid at its melting point.
- During this phase change, the temperature of the substance remains constant as the solid absorbs heat energy to break the bonds between the particles and transition into a liquid state.
Importance
- The latent heat of fusion plays a crucial role in various natural processes and everyday applications.
- For example, it is essential in understanding the melting and freezing of substances such as ice and wax.
- It is also utilized in industries like refrigeration and food preservation.
Unit
- The unit of measurement for latent heat of fusion is joules per kilogram (J/kg).
- It represents the amount of energy required to change 1 kilogram of a substance from a solid to a liquid state.
Calculation
- The latent heat of fusion can be calculated using the formula Q = m * Lf, where Q is the heat energy, m is the mass of the substance, and Lf is the latent heat of fusion.
- This formula helps in determining the amount of heat energy needed to change a specific quantity of a substance from a solid to a liquid.
In conclusion, the latent heat of fusion is a fundamental concept in thermodynamics that describes the energy required to change a solid substance into a liquid at its melting point. It is an important parameter in understanding phase transitions and is widely used in various scientific and industrial applications.
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What is the latent heat of fusion?a)Heat required to change a liquid to a gasb)Heat required to change a gas to a liquidc)Heat required to change a solid to a liquidd)Heat required to change a liquid to a solidCorrect answer is option 'C'. Can you explain this answer?
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