Basic concepts and example in entropy (physical chemistry)

Basic concept and example in entropy.

An endothermic process with a loss of entropy: (An Reaction which jailed energy and head formation of more disposition substances/compounds)

Recrystalistaion:

In order to dissolved the crystals in the solvent, energy is required to be put into system in the form of heat, (increasing the energising energy of the system to dissolved the contaminated crystals .As the kinetic energy of the system increased,( the molecules deep down the solvent absorbed the energy and moved with increased energy and collision among the solvent molecules and the crystal increases,(since the solvent molecules is trying to dissipated the kinetic energy if has absorbed) eventually the energy supplied will be great than that of bonds energy (the latticework energy which hold the crystal together) within the crystal. The lattice will eventually be broken resulting in the crystal existing as ions within the solution. The impureness primarily trapped within the crystal is separated from the crystal, (the crystal complex body part is now broken and exists as free ions within the solution)

The impurity is then filtered off, then the crysta ions are now free to recrystallise come in of the solution.



As the crystal is reformed, bonds are also reformed in the midst of crystals giving out energy and in the process graceful more stable (as a result the system has a net loss in entropy)

The net energy tilt in terms of energy supplied and given out, as the bonds in the midst of the crystals are broken and reformed. The amount of energy (heat) supplied to the system is great than that of the energy (heat) given out as the crystal lattice is reformed. (Therefore the reaction is endothermic)

An endothermic process with a gain in entropy (A reaction which absorbed heat and result in a less ordered/more disorder substance):

Phase heighten of water from liquid...

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