Solubility constants

[MediCynical]

"Given a table listing substances and their solubility constants, how would you determine which substance was most soluble in pure water?"

Would you just need to quickly estimate the molar solubility of each while taking into account the common ion effect?

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[sizillyd]

Yes you would need to take into account the common ion effect, but I'm pretty sure all you need to do is use the Ksp and set up a solubility product equation and solve for "x" to find the answer.