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The formula for the entropy change in the surroundings is ΔSsurr = ΔHsys/T Δ S s u r r = Δ H s y s / T. If this equation is replaced in the previous formula, and the equation is then multiplied by T and by -1 it results in the following formula. −TΔSuniv = ΔHsys − TΔSsys (10.5.7) (10.5.7) − T Δ S u n i v = Δ H s y s − T Δ S s y s.
Entropy is a measure of the number of ways a thermodynamic system can be arranged, commonly described as the "disorder" of a system. This concept is fundamental to physics and chemistry, and is used in the Second law of thermodynamics, which states that the entropy of a closed system (meaning it doesn't exchange matter or energy with its surroundings) may never decrease.
Video transcript. - [Instructor] The concept of entropy is related to the idea of microstates. And to think about microstates, let's consider one mole of an ideal gas. So remember, n represents moles at a specific pressure, volume, and temperature. If the system of gas particles is at equilibrium, then the pressure, the volume, the number of ...
- 12 min
- Jay
15 apr 2024 · Entropy. 물체의 열적 상태를 나타내는 물리량의 하나로 흔히 일반인들에게 무질서도 (無秩序度)라고 알려져 있기도 하다. [1] 통계역학 으로 엔트로피가 미시상태의 수에 대응된다는 것이 밝혀졌다. 엔트로피에 대해 기술한 것이 열역학 제2법칙이며, 자연현상의 ...
Thermodynamics - Entropy, Heat, Energy: The concept of entropy was first introduced in 1850 by Clausius as a precise mathematical way of testing whether the second law of thermodynamics is violated by a particular process. The test begins with the definition that if an amount of heat Q flows into a heat reservoir at constant temperature T, then its entropy S increases by ΔS = Q/T. (This ...
9 mag 2017 · View full lesson: http://ed.ted.com/lessons/what-is-entropy-jeff-phillipsThere’s a concept that’s crucial to chemistry and physics. It helps explain why phys...
- 5 min
- 4,3M
- TED-Ed
エントロピー（英: entropy ）は、熱力学および統計力学において定義される示量性の状態量である。 熱力学において断熱条件下での不可逆性を表す指標として導入され、統計力学において系の微視的な「乱雑さ」 を表す物理量という意味付けがなされた。
