Hydrolysis of salts of weak acid-weak base

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In summary, the formula pH=7+1/2(pKa-pKb) describes the relationship between the pH of a solution and the dissociation constants of an amphiprotic salt. This formula is only approximate and works well when the concentration of the salt is reasonably high. Even a small amount of this salt can significantly affect the pH of a solution, regardless of dilution. There are no assumptions involved in this formula, as explained in further detail on the ChemBuddy website.
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Rishavutkarsh
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I just came across the hydrolysis of the salts and the formula
pH=7+1/2(pKa-pKb)
What's bugging me about this is how can this be independent of Concentration?
I mean if we dilute it why won't it affect the pH? That means that even a negligible amount of such a salt can affect the pH of a bucket of water? Also there is no assumption involved so please explain how exactly is this plausible, thanks.
 
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1. What is hydrolysis of salts of weak acid-weak base?

Hydrolysis of salts of weak acid-weak base is a chemical process in which a salt, which is formed from the reaction between a weak acid and a weak base, reacts with water to produce an acidic or basic solution.

2. How does hydrolysis of salts of weak acid-weak base occur?

Hydrolysis occurs when the ions of the salt dissociate in water and react with water molecules. The anion of the salt, which is the conjugate base of the weak acid, can either accept a proton from water, making the solution basic, or donate a proton to water, making the solution acidic. The cation of the salt, which is the conjugate acid of the weak base, can also react with water to release protons, contributing to the acidity of the solution.

3. What factors affect the degree of hydrolysis of salts of weak acid-weak base?

The degree of hydrolysis is affected by the strength of the weak acid and weak base, as well as the concentration of the salt solution and the temperature. A higher concentration of the salt solution or a higher temperature can increase the degree of hydrolysis, while a stronger weak acid or base can decrease it.

4. How does hydrolysis of salts of weak acid-weak base affect the pH of the solution?

The pH of the solution is determined by the concentration of hydrogen ions (H+) present. In hydrolysis of salts of weak acid-weak base, the reaction produces either H+ ions or OH- ions, depending on the strength of the weak acid and base. This can result in a solution that is either acidic or basic, depending on which ion is more abundant.

5. What are some real-world applications of hydrolysis of salts of weak acid-weak base?

Hydrolysis of salts of weak acid-weak base is important in many industries, such as food production, pharmaceuticals, and agriculture. It is also a crucial process in the human body, as it helps to maintain the pH balance in our blood and other bodily fluids. Additionally, understanding hydrolysis can help in the design and production of more effective and stable medications.

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