Determine the solubility of FeS at 25 degrees Celsius
FeS ==> Fe^2+ + S^2-
Ksp = (Fe^2+)(S^=)
Look up the Ksp for FeS, set up an ICE chart, substitute into the Ksp expression and solve for the solubility.
What is an ICE chart?
If we let x stand for the solubility of FeS, then x is the concn of iron(II) and x is the concn of S^2-.
................FeS ==> Fe^2+ + S^2-
initial...................0......0
change....................x.......x
equil.....................x.......x
I stands for initial
C stands for change
E stands for equilibrium.
I have set one up above for you.
So you substitute x for (Fe^2+) and x for (S^2-), and whatever you find in your text for Ksp FeS, and solve for x.
To determine the solubility of FeS (iron sulfide) at 25 degrees Celsius, we can refer to a solubility table or use the solubility product constant (Ksp) of FeS.
1. Solubility Table: We can consult a solubility table that provides information on the solubility of various compounds at different temperatures. These tables usually categorize compounds as soluble, insoluble, or slightly soluble. However, it is important to note that not all compounds are listed in these tables. Unfortunately, FeS is not commonly listed in solubility tables due to its limited solubility.
2. Solubility Product Constant (Ksp): The solubility of a compound can also be determined by its Ksp value. Ksp is an equilibrium constant that measures the extent to which a compound dissolves in water. The higher the Ksp value, the more soluble the compound.
For FeS, we can write the balanced chemical equation for its dissolution in water:
FeS (s) ↔ Fe²⁺(aq) + S²⁻(aq)
The solubility product constant equation for iron sulfide can be represented as:
Ksp = [Fe²⁺][S²⁻]
However, the Ksp value for FeS is not readily available. Hence, we need to calculate it using experimental data or thermodynamic calculations.
3. Experimental Determination: FeS is sparingly soluble in water, meaning it has a low solubility. Therefore, determining its exact solubility at 25 degrees Celsius may require performing experiments. In these experiments, different concentrations of FeS can be added to water at 25 degrees Celsius and observed for saturation or precipitation. By finding the concentration at which the solution becomes saturated, we can determine the solubility of FeS.
Overall, due to the limited solubility and lack of readily available Ksp values for FeS, experimental determination would be the most accurate method to determine its solubility at 25 degrees Celsius.