Greater the degree of dissociation (a) of an acid or base, greater is...
The equilibrium constant is always fixed and is a characteristic of a reaction at specified temperature because it defines the composition of the final equilibrium mixture of that reaction regardless of the starting amount of reactants and products.
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Greater the degree of dissociation (a) of an acid or base, greater is...
Assertion: The equilibrium constant is fixed and is a characteristic of any given chemical reaction at a specified temperature.
Reason: The composition of the final equilibrium mixture at a particular temperature depends upon the starting amount of reactants.
The correct answer is option 'C' - A is true but R is false.
Explanation:
The equilibrium constant (K) is a measure of the extent to which a chemical reaction reaches equilibrium. It is a fixed value at a given temperature and is determined by the stoichiometry of the balanced chemical equation. The equilibrium constant is independent of the initial concentrations of reactants and products.
Assertion: The equilibrium constant is fixed and is a characteristic of any given chemical reaction at a specified temperature.
This statement is correct. The equilibrium constant remains constant as long as the temperature is constant. It is a characteristic of the reaction and provides information about the position of equilibrium. The value of K can vary depending on the temperature, but for a given temperature, it is fixed.
Reason: The composition of the final equilibrium mixture at a particular temperature depends upon the starting amount of reactants.
This statement is false. The composition of the equilibrium mixture is determined solely by the value of the equilibrium constant (K) and not by the starting amount of reactants. The equilibrium constant determines the ratio of products to reactants at equilibrium, regardless of the initial concentrations. The starting amounts of reactants only affect the time it takes for the reaction to reach equilibrium, but not the final composition of the equilibrium mixture.
In conclusion, while the assertion is true, the reason is false. The equilibrium constant is fixed and is a characteristic of any given chemical reaction at a specified temperature, and the composition of the final equilibrium mixture is determined by the equilibrium constant, not the starting amount of reactants.
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