The first step we are going to take in order to know the meaning of the term thermal equilibrium is to know the etymological origin of the two words that shape it:
-Equilibrio, first of all, comes from Latin, specifically "aequilibrium", which is the result of the sum of two distinct parts: "aequus", which can be translated as "equal", and the noun "libra", which It is synonymous with "balance."
-Chemical, secondly, we can determine that the Arabic “kimiyá” comes from, which is synonymous with “philosopher's stone” or “alchemy”.
The idea of Balance It appears in different fields related to science. The balance, in this framework, is a state or a situation where there is harmony or equanimity . The notion also refers to what happens when the forces acting in a system they counter each other .
The chemical , on the other hand, it relates to the body composition . The science dedicated to the analysis of the properties, structure and changes of bodies, in fact, is called chemistry .
From these concepts, we can understand what is the chemical balance . This is the name of state in which the concentration of a product or reagent and the chemical activity do not register net changes over time .
The thermal equilibrium is reached when the development of a reversible reaction is carried out in the identical proportion Than your inverse reaction. The speed of these reactions, therefore, are the same and there are no net variations in concentrations.
It should be remembered that a chemical reaction is a process that leads substances (reagents) to undergo changes in their molecular structure and in their bonds, becoming products . When reagents are mixed, they are not transformed into products in their entirety. After a certain time, if the opposite reactions reach the same reaction rate, the chemical equilibrium is created and the relationship established by the reagents and the products is fixed.
In addition to all of the above, we cannot ignore the fact that the chemical equilibrium can be broken, that is, it can be modified. Specifically, this can be caused by different disturbances, among which we can highlight the following:
-Can take place a change in what is the temperature.
-In the same way, it is possible that the end of said chemical equilibrium occurs because there has been a change in what is the volume. This situation may occur when gases are brought into play.
-Also, a change in the concentration of certain reagents can also lead to this alteration of the balance.
In addition to all of the above, we must not overlook the fact that around these variations in equilibrium there is what is known as the Le Chatelier Principle. This indicates that a change in the state of that brings with it what is a displacement in the sense of minimizing what is the effect caused by the disturbance.