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Encyclopedia > Entropy of fusion

The Entropy of fusion of a substance represents the increase in the degree of disorder involved in the transition from an organized crystalline solid to the disorganized structure of a liquid. It is denoted as ΔfusS and normally expressed in J / mol · K


A natural process such as a phase change will occur when the associated change in the Gibbs free energy is negative. It follows that the entropy of fusion is related to the melting point and the heat of fusion:


  Results from FactBites:
 
Search Encyclopedia.com (519 words)
cold fusion cold fusion or low-temperature fusion, nuclear fusion of deuterium, an isotope of hydrogen, at or relatively near room temperature.
Fusion, the reaction involved in the release of the destructive energy of a hydrogen bomb, requires extremely high temperatures, and investigations of fusion as a possible energy source h...
The design of nuclear fusion reactors, which are still in the experimental stage, differs considerably from that of fission reactors.
Notes on Entropy & Gibbs Energy (657 words)
Entropy, unlike energy, need not be conserved--entropy increases when a natural process occurs.
Molar entropies of gases & solutions depends on concentrations--due to change in positional disorder.
Generally, the more atoms of a given type there are in a molecule, the greater the capacity of the molecule to take up energy and thus the greater the entropy.
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