Solubility Constant vs Aqueous solubility

[Hockeystar]

Homework Statement

The solubility constant for AgBr in water is 5.2 x 10^-13. What is the aqueous solubility of AgBr?

Homework Equations

Ksp= [Ag+][Br-]

AgBr is a constant and therefore is not part of the Ksp.

The Attempt at a Solution

NVM solved problem. Should use ICE table.

 

[Borek]

Just calculate concentration of Ag⁺ in the saturated solution - remembering that [Ag⁺] = [Br^-] - and you are done. That's not much different from using ICE table, but ICE table as such is an overkill here.

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methods

 

[Hockeystar]

Thanks for the help borek. It should be 5.2 x 10-13= x^2.

x= 7.2 x 10^-7

 

[Borek]

Exactly.

It doesn't differ from what you should get using ICE table, so it is not an error to use it, just no need for elaborate approach. Save it for difficult problems

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methods

 

[DeeNos]

I would like to clarify the difference between solubility constant and aqueous solubility in this context. The solubility constant, also known as Ksp, is a measure of the equilibrium concentration of the ions in a saturated solution of a compound. It is a constant value that is specific to a particular compound and temperature.

On the other hand, aqueous solubility refers to the maximum amount of a compound that can be dissolved in a given amount of solvent at a specific temperature. In this case, the aqueous solubility of AgBr would be the maximum amount of AgBr that can be dissolved in water at a particular temperature.

To determine the aqueous solubility of AgBr, we need to use the solubility constant (Ksp) and the stoichiometry of the compound. Using the equation Ksp= [Ag+][Br-], we can set up an ICE table to solve for the concentration of Ag+ and Br- ions in a saturated solution of AgBr. From this, we can determine the aqueous solubility of AgBr.

In summary, the solubility constant and aqueous solubility are related but distinct concepts. The solubility constant is a constant value specific to a compound, while aqueous solubility refers to the maximum amount of a compound that can be dissolved in a given solvent at a specific temperature.