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Results tagged with thermodynamics
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user 105482
Covers the study of (primarily homogeneous) macroscopic systems from a heat/energy/entropy point of view. Consider also using the tag: [statistical-mechanics].
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Thermodynamic potentials and Legendre transformations
Background
In thermodynamics one can perform a Legendre transformation to switch between different chemical potentials. …
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Using a Legendre transformation to convert enthalpy to internal energy
Let us consider the enthalpy as a function of temperature and pressure, such that $H = H(T,p).$
Now, say we want to exchange the pressure $p$ by the volume $V$ by performing a Legendre transformation …
- 465
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Heat transfer in the isothermal expansion in the Carnot cycle
Problem
In the Carnot cycle there are two adiabatic and two isothermal processes. This question focuses on the isothermal expansion.
In the isothermal expansion books often writes that the system is …
- 465
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In reversible process, why define $\delta W=-PdV$ instead of $\delta W=-VdP$?
Maybe I misunderstand your question, but pdV-work follows naturally from the definition of work $W$ from classical mechanics (in one dimension):
$$
dW = F dx = pA dx = p dV
$$
where $p$ is pressure, $ …
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