Question

What pH buffer solution is needed to give a Mg2+ concentration of 3.0×10−2 M in equilibrium with solid magnesium oxalate?

Answer 1

What Ksp are you using for Mg(C2O4)2? Plus, since k1 and k2 for H2C2O4 are so close to one another, are you to solve this problem using BOTH k1 and k2 or just k1.

Sorry but it's past my bed time and this is a time consuming problem. I'm tied up tomorrow for most of the day. So, if I can't find this problem (and the previous one too) please repost, remembering to answer my questions above and I'll try to do these later. Of course, some other tutor may answer first.