Equalibrium & Le chatliers principle

[faisal]

When your increase the concentration do you increase the yield of products?
And if you increase temperature will the system oppose this change and reduce the temperature applying le-chitaliers principle, and how much yield would you get if temperature is increased/reduced?

 

[Artermis]

Given
A + B <==> C + D at equilibrium
If you increase the concentration of A, there will be a shift in equilibrium towards the right side of the equation and a decrease in concentration of B.
For the temperature it depends on whether or not the reaction is an exothermic reaction or an endothermic reaction. I'll let you think about this one...
Endothermic reaction:
heat + A + B <==> C + D
Exothermic reaction:
A + B <==> C + D + heat

 

[ravenprp]

Equilibrium and Le Chatelier's Principle are important concepts in chemistry that help us understand how a system responds to changes in conditions. In an equilibrium system, the forward and reverse reactions are occurring at the same rate, resulting in a constant concentration of reactants and products. Le Chatelier's Principle states that when a system in equilibrium is subjected to a change in conditions, it will respond in a way that minimizes the effect of that change.

In terms of increasing the concentration of reactants or products, Le Chatelier's Principle predicts that the system will shift in the direction that reduces the concentration of the added species. This is because an increase in concentration disrupts the equilibrium and the system will try to restore balance by producing more of the product or consuming more of the reactant. Therefore, increasing the concentration of a reactant will result in an increase in product yield, and vice versa.

When it comes to changes in temperature, Le Chatelier's Principle also applies. In an exothermic reaction, increasing the temperature will shift the equilibrium towards the reactants to consume the excess heat. On the other hand, decreasing the temperature will shift the equilibrium towards the products to release more heat. In an endothermic reaction, the opposite effects will occur. Therefore, the system will always try to oppose the change in temperature by shifting the equilibrium in the direction that minimizes the effect of the temperature change.

The amount of yield obtained when the temperature is increased or reduced will depend on the specific reaction and its equilibrium constant. Generally, increasing the temperature will result in a higher yield if the reaction is exothermic, and a lower yield if the reaction is endothermic. The opposite is true for decreasing the temperature. However, it is important to note that there are other factors that can also affect yield, such as the concentration of reactants and the presence of catalysts.

In conclusion, Le Chatelier's Principle predicts that a system in equilibrium will respond to changes in conditions in a way that minimizes the effect of that change. Increasing the concentration of a reactant will result in an increase in product yield, while increasing or decreasing the temperature will affect yield differently depending on the nature of the reaction. It is important to carefully consider all factors and conditions when trying to maximize product yield in a chemical reaction.