Molar solubility and ions

[Chocolatebear89]

I was wondering if given the molar solubilities, would we still have to multiply them by the moles of ion to find the one that is most soluble?

For instance, we have AgF with molar solubility of 6.8E-4, and we have Ag2C2O4 with molar solubility of 4.0E-4. Which one has the highest Ag2+?

Just looking at molar solubility, AgF would be more soluble because it has higher value, but after multiplying the molar solubility of Ag2C2O4 by 2, because there two Ag2+ ions in one mole of the compound, Ag2C2O4 will have the higher value.

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[Rabolisk]

Molar solubility refers to compounds, but the saturated concentration of [Ag+] does not necessarily correlate directly with molar solubility.