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First Law of Thermodynamics Video Lecture | Physical Chemistry
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FAQs on First Law of Thermodynamics Video Lecture - Physical Chemistry
| 1. What is the first law of thermodynamics? |  |
Ans. The first law of thermodynamics, also known as the law of energy conservation, states that energy cannot be created or destroyed, but it can only be transferred or converted from one form to another within a closed system.
| 2. How does the first law of thermodynamics relate to heat transfer? | |
Ans. The first law of thermodynamics is applicable to heat transfer because it states that the total energy of a closed system remains constant. In heat transfer processes, energy is transferred from a higher temperature region to a lower temperature region, but the total amount of energy in the system remains constant.
| 3. Can you give an example of the first law of thermodynamics in action? | |
Ans. Sure! Consider a cup of hot coffee left in a room. The coffee will gradually cool down as heat is transferred from the hot coffee to the surrounding air. According to the first law of thermodynamics, the energy lost by the coffee will be equal to the energy gained by the air, resulting in a decrease in the coffee's temperature and an increase in the air's temperature.
| 4. Is the first law of thermodynamics applicable to both closed and open systems? | |
Ans. Yes, the first law of thermodynamics is applicable to both closed and open systems. In a closed system, no matter or energy can enter or leave, so the total energy remains constant. In an open system, matter or energy can enter or leave, but the first law still holds true as the total energy of the system is conserved.
| 5. How does the first law of thermodynamics relate to work done? | |
Ans. The first law of thermodynamics states that energy can be transferred or converted from one form to another. In the context of work done, if a system performs work, it uses its internal energy to do so. Conversely, if work is done on a system, the system gains internal energy. The first law of thermodynamics ensures that the total energy remains constant, accounting for any changes in work done.
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Dec 23, 2024 Last updated |
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