First slide
Solubility product(KSP)
Question

Statement 1 : BaCO3 is more soluble in  HNO3 than in plain water.

Statement 2 : Carbonate is a weak base and reacts with the H+ from the strong acid, causing the barium salt to dissociate.

Moderate
Solution

Barium carbonate is more soluble in HNO3 than in water. Carbonate is a weak base and reacts with the H+ ion of  HNO3 causing the barium salt to dissociate.

BaCO3 + HNO3      BaNO32  +  CO2   + H2O

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