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Using Le Chatelier's Principle to explain why percent dissociation of acids/bases increase with dilution
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Alexander L
Using Le Chatelier's Principle to explain why percent dissociation of acids/bases increase with dilution
As concentration of weak acid decreases, a dilution is occurring, thus an increase in water. So equilibrium shifts right to make up more products to make up for increase in h20. Products/reactants. More products = bigger numerator = increase percent dissociation.
As concentration of weak acid decreases, a dilution is occurring, thus an increase in water. So equilibrium shifts right to make up more products to make up for increase in h20. Products/reactants. More products = bigger numerator = increase percent dissociation.
Le Chatelier's Prinicple also says that the system will adjust itself based on a change in concentration.
Concentration of an acid is (normally) expressed in moles/liter. If you were to increase the amount of solvent (water) which is on the reactant side of the equation, you would be diluting the acid solution that is in equilibrium and causing the system to adjust accordingly.
As far as the last portion of your request is concerned I am slightly confused. Le Chatelier's Prinicple is built into the equilibrium expression. If I wanted to show how the system were to react based on the addition of more reactants/products I would just use the equilibrium expression for the system.
Hope this helps, D
Le Chatelier's Prinicple also says that the system will adjust itself based on a change in concentration.
Concentration of an acid is (normally) expressed in moles/liter. If you were to increase the amount of solvent (water) which is on the reactant side of the equation, you would be diluting the acid solution that is in equilibrium and causing the system to adjust accordingly.
As far as the last portion of your request is concerned I am slightly confused. Le Chatelier's Prinicple is built into the equilibrium expression. If I wanted to show how the system were to react based on the addition of more reactants/products I would just use the equilibrium expression for the system. Hope this helps, D
Le Chateliers Principle can still be used to get an idea of how the reaction is going to adjust according to what is added. The equilibrium constant is a mathematical way of determining exactly how it will adjust.More
So when the water is added, the concentrations of HA, H+, and A-, will all decrease, so we cant really use Le Chateliers Principle right? But using the equilibrium constant will always work.More
As concentration of weak acid decreases, a dilution is occurring, thus an increase in water. So equilibrium shifts right to make up more products to make up for increase in h20. Products/reactants. More products = bigger numerator = increase percent dissociation.
As concentration of weak acid decreases, a dilution is occurring, thus an increase in water. So equilibrium shifts right to make up more products to make up for increase in h20. Products/reactants. More products = bigger numerator = increase percent dissociation.
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Le Chatelier's Prinicple also says that the system will adjust itself based on a change in concentration.
Concentration of an acid is (normally) expressed in moles/liter. If you were to increase the amount of solvent (water) which is on the reactant side of the equation, you would be diluting the acid solution that is in equilibrium and causing the system to adjust accordingly.
As far as the last portion of your request is concerned I am slightly confused. Le Chatelier's Prinicple is built into the equilibrium expression. If I wanted to show how the system were to react based on the addition of more reactants/products I would just use the equilibrium expression for the system.
Hope this helps, D
Le Chatelier's Prinicple also says that the system will adjust itself based on a change in concentration.
Concentration of an acid is (normally) expressed in moles/liter. If you were to increase the amount of solvent (water) which is on the reactant side of the equation, you would be diluting the acid solution that is in equilibrium and causing the system to adjust accordingly.
As far as the last portion of your request is concerned I am slightly confused. Le Chatelier's Prinicple is built into the equilibrium expression. If I wanted to show how the system were to react based on the addition of more reactants/products I would just use the equilibrium expression for the system.
Hope this helps, D
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