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FAQs on Question Bank: Chemical Equilibrium - Chemistry Class 11 - NEET

1. What is chemical equilibrium?
Chemical equilibrium is a state in a chemical reaction where the forward and reverse reactions occur at the same rate, resulting in no net change in the concentrations of reactants and products over time. It is characterized by a dynamic balance between the reactants and products.
2. How is chemical equilibrium achieved?
Chemical equilibrium is achieved when the rates of the forward and reverse reactions become equal. This can happen when the concentrations of reactants and products reach a certain point where the reaction rates no longer change significantly. It is important to note that equilibrium does not imply that the reactants and products are present in equal amounts, but rather that their concentrations remain constant over time.
3. What factors can affect chemical equilibrium?
Several factors can affect chemical equilibrium, including changes in temperature, pressure, and concentration. Changes in temperature can shift the equilibrium position by either favoring the forward or reverse reaction, depending on whether the reaction is exothermic or endothermic. Changes in pressure (for reactions involving gases) can also impact the equilibrium position by affecting the volume and concentration of the gases. Finally, changes in concentration can shift the equilibrium by altering the ratio of reactants to products.
4. How does Le Chatelier's principle relate to chemical equilibrium?
Le Chatelier's principle states that when a system in equilibrium is subjected to a change, it will adjust to counteract the effect of that change and restore equilibrium. This principle can be used to predict the direction in which the equilibrium will shift when certain changes are made to the system, such as changes in temperature, pressure, or concentration. By applying Le Chatelier's principle, it is possible to manipulate the conditions to favor the formation of more products or reactants in a chemical equilibrium.
5. Can chemical equilibrium be disturbed?
Yes, chemical equilibrium can be disturbed by changing the conditions of the system. For example, increasing the concentration of one of the reactants or products will shift the equilibrium in the direction that reduces the excess concentration. Similarly, altering the temperature or pressure can also disrupt the equilibrium and cause the system to readjust. However, it is important to note that once a new equilibrium is established, the concentrations of reactants and products will remain constant again.
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