Gibbs’s phase rule

Gibbsitic [14762-49-3] Gibbs-Kelvin equation Gibbs phase rule Gibbs s phase rule Gibbs s theorem Gibbs-Thomson equation... 

This is Gibbs s phase rule. It specifies the number of independent intensive variables that can and must be fixed in order to estabbsh the intensive equibbrium state of a system and to render an equibbrium problem solvable. 

For a system such as discussed here, the Gibb s Phase Rule [59] applies and establishes the degrees of freedom for control and operation of the system at equilibrium. The number of independent variables that can be defined for a system are ... 

Gibb s Phase Rule. The phase rule derived by W. J. Gibbs applies to multiphase equilibria in multicomponent systems, in the absence of chemical reactions. It is written as... 

The crystallization process of flexible long-chain molecules is rarely if ever complete. The transition from the entangled liquid-like state where individual chains adopt the random coil conformation, to the crystalline or ordered state, is mainly driven by kinetic rather than thermodynamic factors. During the course of this transition the molecules are unable to fully disentangle, and in the final state liquid-like regions coexist with well-ordered crystalline ones. The fact that solid- (crystalline) and liquid-like (amorphous) regions coexist at temperatures below equilibrium is a violation of Gibb s phase rule. Consequently, a metastable polycrystalline, partially ordered system is the one that actually develops. Semicrystalline polymers are crystalline systems well removed from equilibrium. 

Biomass Stability in the Light of Gibbs s Phase Rule... 

General gas law, 18 Geneva system, 5, 7, 8 Gibb s phase rule, 75 S. 

You will find the Gibb s phase rule a useful guide in establishing how many properties, such as pressure and temperature, have to be specified to definitely fix all the remaining properties and number of phases that can coexist for any physical system. The rule can be applied only to systems in equilibrium. It says that... 

According to Gibb s phase rule, a system of c components in p phases has c — p + 2 degrees of freedom. It is a law completely free from all hypothetical assumptions as to the molecular condition of the substances involved. 

The Gibb s phase rule tells how many degrees of freedom (variables you can change) you have in any system if you know the number of components (C), the number of phases (P), and the temperature and pressure. 

What does the Gibb s phase rule tell you about a system ... 

Consider a system at equilibrium with n components and tt phases. Let f be the number of independently variable intensive properties of the composite system not allowing chemical reactions. Gibbs s phase rule states... 

M, Feinberg. On Gibbs s phase rule. Arch. Rational Meek. Anal, 70 219- 234,1979. 

Nor was Ostwald the only one in the 1890s to recognize the worth of Gibbs. The Dutch physical chemist, Hendrik Willem Bakhuis Roozeboom (1854-1907), publicized Gibbs s phase rule throughout Europe and did so most effectively. 

For further information on Gibbs s phase rule, see Elements of Physical Chemistry in the Further Reading section at the end of this chapter. According to the Nernst distribution law. 

It will proceed at constant temperature, as an exothermic reaction. The system will be invariable, as a result of Gibbs s phase rule. ... 

Gibbs s phase rule can be found in Physical Chemistry, P. Atkins, Oxford University Press 1998. 

Atkins, PW Gibbs s Phase Rule Can be Found in Physieal Chemistry. Oxford University Press (1998)... 

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