Which one of the following informations can be obtained on the basis o...
The correct answer is D: Shift in equilibrium position on changing value of a constraint.
The Le Chatelier principle states that if a system in equilibrium is subjected to a change in concentration, pressure, or temperature, the system will shift in a way that tends to oppose the change. This principle can be used to predict how the equilibrium position of a chemical reaction will shift in response to changes in concentration, pressure, or temperature.
A: Dissociation constant of a weak acid - This information cannot be obtained from the Le Chatelier principle. The dissociation constant of a weak acid is a measure of the strength of the acid and is related to the tendency of the acid to donate protons to water.
B: Entropy change in a reaction - This information cannot be obtained from the Le Chatelier principle. The entropy change in a reaction is a measure of the disorder or randomness of the system and is related to the number of microstates available to the system.
C: Equilibrium constant of a chemical reaction - This information cannot be obtained from the Le Chatelier principle. The equilibrium constant of a chemical reaction is a measure of the relative concentrations of the reactants and products at equilibrium and is related to the spontaneity of the reaction.
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Which one of the following informations can be obtained on the basis o...
Le Chatelier's principle is a fundamental concept in chemical equilibrium. It states that when a system at equilibrium is subjected to a change in temperature, pressure, or concentration of reactants or products, the system will shift its equilibrium position to counteract the change and restore equilibrium.
The information that can be obtained on the basis of Le Chatelier principle is:
Shift in equilibrium position on changing value of a constraint
The shift in equilibrium position can be predicted by considering the effect of the change in constraint on the concentration of reactants or products. The principle predicts that the system will shift its equilibrium position in the direction that counteracts the change in constraint.
Examples:
1. Change in concentration - If the concentration of reactants is increased, the system will shift its equilibrium position towards the product side to counteract the increase in concentration of reactants.
2. Change in pressure - If the pressure is increased, the system will shift its equilibrium position towards the side with fewer moles of gas to counteract the increase in pressure.
3. Change in temperature - If the temperature is increased, the system will shift its equilibrium position in the direction that absorbs heat to counteract the increase in temperature.
Conclusion:
Le Chatelier principle is a powerful tool for predicting the shift in equilibrium position on changing the value of a constraint. It helps in understanding the behavior of chemical systems at equilibrium and is widely used in various fields of chemistry.
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