According to law of calorimetry, which of the given relation is true?a...
A principle of calorimetry states that if there is no loss of heat in surrounding the total heat lost by hot body equal to the total heat gained by a cold body.
i.e. heat loss = heat gain
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According to law of calorimetry, which of the given relation is true?a...
Understanding the Law of Calorimetry
Calorimetry is the science of measuring heat transfer in physical and chemical processes. The fundamental principle of calorimetry is based on the conservation of energy, stating that energy cannot be created or destroyed, only transferred.
Heat Transfer in a Closed System
In a closed system where two substances interact (e.g., hot and cold bodies), the heat lost by the hotter substance must equal the heat gained by the colder substance at thermal equilibrium. This leads to the following relationship:
- Heat gained = Heat lost
Why Option B is Correct
- Energy Conservation: According to the law of conservation of energy, the total energy in an isolated system remains constant. When heat is transferred, the heat lost by one object must equal the heat gained by another.
- Thermal Equilibrium: When two substances at different temperatures come into contact, heat will flow from the hotter to the cooler substance until they reach the same temperature. At this point, the heat gained by the cooler substance (q gained) equals the heat lost by the hotter substance (q lost).
- Mathematical Representation: This can be represented as q gained = - q lost, which simplifies to q gained = q lost in terms of magnitude.
Conclusion
Thus, the correct answer is option 'B': Heat gained = Heat lost. This fundamental concept is crucial in various applications, including designing calorimeters and understanding thermodynamic processes in chemistry and physics.
According to law of calorimetry, which of the given relation is true?a...
A principle of calorimetry states that if there is no loss of heat in surrounding the total heat lost by hot body equal to the total heat gained by a cold body.
i.e. heat loss = heat gain