Calculating Maximum [Ca2+] Without Precipitation: Ksp for CaC2O4 = 2.6e-9

[tornzaer]

Homework Statement

What is the maximum [Ca2+] that can exist with 5.2e-4 M c2O4 2- without precipitating? Ksp for CaC2O4 = 2.6e-9.

Homework Equations

Well, the Ksp and M is given, I don't know how to apply them.

The Attempt at a Solution

I need help because I missed the lesson.

Thank you.

 

[Borek]

Do you know Kso formula looks alike for calcium oxalate?

 

[tornzaer]

Pardon? I don't know what you are saying.

If you mean what it is, I don't think I'm supposed to use it since it's not a given in the question.

 

[tornzaer]

Bump. Someone please help me.

 

[Borek]

Sorry, I wrote Kso instead of Ksp - but these are the same, one stands for solubility, second for solubility product. Do you know formula for solubility product for calcium oxalate? Note that Ksp for calcium oxalate is given.