What would you expect to happen if an unknown solution that

What would you expect to happen if an unknown solution that may contain ions from Groups I through IV were treated with Na2CO3 under basic conditions? Explain in terms of the solubility rules.

Solution

group IV cations gets precipated as Carbonates while Group 1 cations remains in solution.

In terms of solubility , group IV cations form carbonates whose ionic product exceeds solubility product hence gets precipitated

Group I cations form carbonates but their ionic product is less than solubility product , hence gets dissolved in solution