LeChatliers Principle with Solubility

[wallace13]

thanks

 

[Borek]

This is a little bit strange question to me. A lot depends on the detailed values of equilibrium constants.

Lowering pH you will protonate benzoate, so according to the LeChaterlier's principle solubility should go up. I am not sure though what is the concentration of benzoic acid that you will get - will it be high enough to precipitate benzoic acid?

Adding NaOH you will precipitate Ag⁺, effectively removing it from the solution. That means - again - that more benzoate will dissolve. However, I am not sure if solution containing sodium benzoate and precipitated AgOH (or perhaps even Ag₂O from AgOH decomposition) can be still called solution of silver benzoate.

Could be solubility of silver benzoate is so low there is no risk of precipitation of neither benzoic acid nor silver hydroxide, I just don't know.

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[Blueshift5]

LeChatelier's Principle states that when a system at equilibrium is disturbed, it will shift in a way that minimizes the disturbance and restores equilibrium. This principle can also be applied to solubility, which is the ability of a substance to dissolve in a solvent.

In terms of solubility, LeChatelier's Principle can be seen as the effect of changing the concentration of either the solute or solvent on the equilibrium between the dissolved and undissolved states. For example, if more solute is added to a solution, the system will shift towards the undissolved state in order to maintain equilibrium. On the other hand, if more solvent is added, the system will shift towards the dissolved state.

Additionally, temperature and pressure can also affect solubility and follow LeChatelier's Principle. For instance, increasing temperature typically increases the solubility of solids in liquids, as the increased energy allows for more solute particles to break apart and dissolve. However, for gases in liquids, increasing temperature decreases solubility, as the gas molecules have more energy to escape the liquid and return to the gas phase.

Overall, LeChatelier's Principle can be a useful tool in predicting how changes in concentration, temperature, and pressure will affect the solubility of a substance. By understanding this principle, scientists can better control and manipulate solubility in various systems, allowing for more accurate and efficient experiments and applications.