Posted by **Evie** on Thursday, May 12, 2011 at 8:33pm.

Determine the solubility of FeS at 25 degrees Celsius

- Chemistry -
**DrBob222**, Thursday, May 12, 2011 at 9:55pm
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.

- Chemistry -
**Evie**, Thursday, May 12, 2011 at 10:20pm
What is an ICE chart?

- Chemistry -
**DrBob222**, Thursday, May 12, 2011 at 10:38pm
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.

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