Quelle masse de bromure d'argent AgBr peut-on dissoudre dans un litre d'une solution 1,0 M de th

Step 1: Determine the solubility product ((K_{sp})) of (mathrm{AgBr}). The solubility product o

Quelle masse de bromure d'argent AgBr peut-on dissoudre dans...

Quelle masse de bromure d'argent $\mathrm{AgBr}$ peut-on dissoudre dans un litre d'une solution $1,0 \mathrm{M}$ de thiosulfate de sodium $\mathrm{Na}_2 \mathrm{~S}_2 \mathrm{O}_3$, où il se forme alors un complexe $\left[\mathrm{Ag}\left(\mathrm{S}_2 \mathrm{O}_3\right)_2\right]^{3-}$ ? Comparez cette quantité à celle qu'on peut dissoudre dans un litre d'eau.

Quelle masse de bromure d'argent $\mathrm{AgBr}$ peut-on dissoudre dans un litre d'une solution $1,0 \mathrm{M}$ de thiosulfate de sodium $\mathrm{Na}_2 \mathrm{~S}_2 \mathrm{O}_3$, où il se forme alors un complexe $\left[\mathrm{Ag}\left(\mathrm{S}_2 \mathrm{O}_3\right)_2\right]^{3-}$ ?
Comparez cette quantité à celle qu'on peut dissoudre dans un litre d'eau.

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Key Concepts

Solubility Product Constant (Ksp)

The solubility product is a constant that represents the maximum product of the ion concentrations that can exist in a saturated solution of a sparingly soluble salt. It is crucial for understanding the limited solubility of salts like AgBr in water by characterizing the equilibrium between the solid salt and its ions.

Complex Ion Formation

Complex ion formation occurs when a metal ion binds to one or more ligands, resulting in a new, often more soluble, species. In the context of the given problem, silver ions from AgBr form a complex with thiosulfate ions, significantly increasing the salt's solubility compared to its behavior in pure water.

Chemical Equilibrium

Chemical equilibrium is the state where the forward and reverse reactions occur at the same rate, maintaining constant concentrations of reactants and products. This concept is integral to evaluating how the formation of a soluble complex shifts the dissolution equilibrium of AgBr, thereby affecting the overall solubility in the solution.

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