ENTROPY IS A MEASURE OF DISPERSED ENERGY

J- nergy tends to disperse. It flows from where it is concentrated to where it is 

Entropy is the term we use to describe this natural. spreading of eneigy. Applied to chemistry, entropy helps us to an.swer a most fundamental question If you take two materials and put them togc ther, will they react to form new materials If the reaction results in an overall increase in entropy, then the answer is yes. Conversely, if the reaction results in an overall decrease in entropy, then the reaction will not occur by itself—eneigy must be supplied to allow the formation of products. 

How then do we figure out whether a chemical reaction results in an increase or decrease In entropy There arc two main considerations. First, we must consider the eneigy contained within the reacting substances. Second, we need to look at whether the rc-action itself is exo- or endothermic. After these two considerations, we arc empowered to asst ss entropy changes, which helps us to determine the likelihood of the reaction. 

---

The second law of thermodynamics involves a term called entropy. Entropy is a measure of the degree that energy disperses from a localized state to one that is more widely spread out. We may also think of entropy (S) as a measure of the disorder of a system. The second law of thermodynamics states that all processes that occur spontaneously move in the direction of an increase in entropy of the universe (system + surroundings). For a reversible process, a system at equilibrium, ASuniverse = 0. We can state this as ... 

The first law of thermodynamics states that the total energy of the universe is constant. The second law of thermodynamics states, that in all spontaneous processes, the entropy of the system increases. Entropy is a measure of the dispersion of energy from a localized one to a more disperse one. It can be... 

S) entropy is a measure of energy dispersal. Any spontaneous change disperses energy and increases entropy overall. For example, when water evaporates, the internal energy of the water is dispersed with the water vapour produced, corresponding to an increase in entropy. 

The analogy is inappropriate. Entropy is a measure of the dispersal of molecules among available energy levels. The entropy of the room is the same whether it is tidy or not. 

Based on its fundamental definition, explain why entropy is a measure of energy dispersion. 

Regardless of their order of appearance, these cards have the same entropy because they are made of the same material, have the same mass, and are at the same temperature. Entropy is NOT a measure of disorder. Rather, it is a measure of the tendency of energy to disperse. Ultimately, discussions of entropy are best left to systems in which the components are perpetually moving, such as we have in the realm of atoms and molecules. 

If one considers entropy a measure of dispersion of energy, then at higher temperatures, it is logical that molecules would have more possible arrangements due to increased molecular motion. 

Entropy (,S) a thermodynamic quantity that is a measure of how dispersed the energy of a system is among the different possible ways that a system can contain energy. (19.2)... 

Revision of Material on Thermodynamics and Kinetics For the eighth edition, we completely revised all the thermodynamics data used in the book, making sure that it is accurate and up-to-date. Also, the discussion of entropy in Chapter 19 was rewritten to present entropy as a measure of the dispersal of energy. 

Entropy (5) is proportional to the number of energetically equivalent ways in which the components of a system can be arranged and is a measure of energy dispersal per unit temperature. 

Processes An Introduction— A process that proceeds without external intervention is said to be a spontaneous process. A nonspontaneous process cannot occur without external intervention. If a process is spontaneous in one direction, then it is nonspontaneous in the reverse direction. Some spontaneous processes are exothermic, and others are endothermic, so the criterion for spontaneous change cannot be based on enthalpy changes alone. The direction of spontaneous change involves changes in another property called entropy. Entropy provides a measure of the number of ways a given quantity of energy can be dispersed, or distributed, among the particles of the system. 

Entropy is described as a measure of the different ways a system can disperse its energy. Any spontaneous process must lead to a net increase in entropy in the universe (second law of thermodynamics). 

---