In thermodynamics, there are a large number of equations relating the various thermodynamic quantities. Some of the most common thermodynamic quantites are: In mathematics, both in vector calculus and in differential topology, the concepts of closed form and exact form are defined for differential forms, by the equations dα = 0 for a given form α to be a closed form, and α = dβ for an exact form, with α given and β... Jump to: navigation, search In Thermodynamics, Bridgmans Thermodynamic equations is actually a method of generating a large number of thermodynamic identities involving a number of thermodynamic quantities. ... Maxwells relations are a set of equations in Thermodynamics which are derivable from the definitions of the four thermodynamic potentials. ... In thermodynamics, four quantities, measured in units of energy, are called thermodynamic potentials: where T = temperature, S = entropy, P = pressure, V = volume // Differential definitions Any differential change in the internal energy U of a system can be written as the sum of heat flowing into the system and work done... Jump to: navigation, search This article needs to be cleaned up to conform to a higher standard of quality. ...

The first four are known as thermodynamic potentials, and their definitions and differential definitions are given in the thermodynamic potentials article. The following equations are classified by subject. See also Bridgman's equations for a technique for building a large number of thermodynamic identities. Jump to: navigation, search The internal energy of a system (abbreviated E or U) is the total kinetic energy due to the motion of molecules (translational, rotational, vibrational) and the total potential energy associated with the vibrational and electric energy of atoms within molecules or crystals. ... This page develops the Helmholtz free energy from the point of view of thermal and statistical physics. ... Jump to: navigation, search In thermodynamics the Gibbs free energy is a state function of any system defined as where G is the Gibbs free energy, measured in joules H is the enthalpy, measured in joules T is the temperature, measured in kelvins S is the entropy, measured... Enthalpy (symbolized H, also called heat content) is the sum of the internal energy of matter and the product of its volume multiplied by the pressure. ... The particle number, N, is the number of so called elementary particles (or elementary constituents) of a thermodynamical system. ... Jump to: navigation, search Pressure (symbol: p) quantifies the intensity of a force acting on a surface in a direction perpendicular to that surface. ... Jump to: navigation, search Density (symbol: ρ - Greek: rho) is a measure of mass per unit of volume. ... 1. ... Jump to: navigation, search In thermodynamics and statistical mechanics, the thermodynamic entropy (or simply the entropy) S is a measure of the internal microscopic disorder present in a system at thermodynamic equilibrium; or, equivalently, the number of possible internal configurations available to the system. ... Temperature is the physical property of a system which underlies the common notions of hot and cold; the material with the higher temperature is said to be hotter. ... Jump to: navigation, search Heat capacity is a measure of the ability of a body to store heat. ... Jump to: navigation, search Heat capacity is a measure of the ability of a body to store heat. ... Jump to: navigation, search Volume, also called capacity, is a quantification of how much space an object occupies. ... In thermodynamics, four quantities, measured in units of energy, are called thermodynamic potentials: where T = temperature, S = entropy, P = pressure, V = volume // Differential definitions Any differential change in the internal energy U of a system can be written as the sum of heat flowing into the system and work done... In Thermodynamics, Bridgmans Thermodynamic equations is actually a method of generating a large number of thermodynamic identities involving a number of thermodynamic quantities. ...

Entropy

Quasi-static and reversible process

Heat capacity at constant pressure

Heat capacity at constant volume

Helmholtz free energy

Gibbs free energy

Enthalpy

Maxwell relations

Maxwells relations are a set of equations in Thermodynamics which are derivable from the definitions of the four thermodynamic potentials. ...

Incremental processes

Compressibility at constant temperature

More relations