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Equilibrium - Law of mass action & chemical equilibrium Video Lecture - Class 11
FAQs on Equilibrium - Law of mass action & chemical equilibrium Video Lecture - Class 11
| 1. What is the law of mass action in chemical equilibrium? |  |
The law of mass action states that the rate of a chemical reaction is directly proportional to the product of the concentrations of the reactants, each raised to the power equal to their respective stoichiometric coefficients. It is used to express the relationship between the concentrations of reactants and products at equilibrium.
| 2. How is the equilibrium constant related to the law of mass action? | |
The equilibrium constant (Kc) is a mathematical expression derived from the law of mass action. It represents the ratio of the product of the concentrations of the products to the product of the concentrations of the reactants, with each concentration raised to the power equal to their respective stoichiometric coefficients. The equilibrium constant provides information about the extent of the reaction at equilibrium.
| 3. What factors can affect the equilibrium position in a chemical reaction? | |
Several factors can affect the equilibrium position in a chemical reaction. These include changes in temperature, pressure, and concentration. Altering any of these factors can shift the equilibrium either to the left or to the right, favoring the formation of either more reactants or more products.
| 4. How can Le Chatelier's principle be applied to predict the effect of changes on chemical equilibrium? | |
Le Chatelier's principle states that when a system at equilibrium is subjected to a change, it will adjust itself to counteract the effect of that change. By applying this principle, we can predict the effect of changes on chemical equilibrium. For example, if the concentration of a reactant is increased, the system will shift towards the product side to consume the excess reactant and restore equilibrium.
| 5. How does temperature affect the equilibrium constant of a reaction? | |
Temperature has a significant effect on the equilibrium constant of a reaction. An increase in temperature generally favors endothermic reactions, causing the equilibrium constant to increase. On the other hand, a decrease in temperature favors exothermic reactions, leading to a decrease in the equilibrium constant. The relationship between temperature and equilibrium constant is described by the Van't Hoff equation.
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Oct 08, 2025
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