Is Barium sulphate soluble in dilute nitric acid? If so, does it liberate CO2 during the reaction?

Answer 1

BaSO4 is insoluble in dilute HNO3; it also does not react with diluteHNO3 to liberate CO2.

Rather, if you want to dissolve Ba2+ in BaSO4, mix a little dry solid BaSO4 with powdered charcoal and put that in the bottom of a 4x1/2in. sodia-lime glass test tube and heat to redness over a gas burner flame. Plunge the test tube quickly into several mL of water. The bottom of the test tube shatters, and BaS dissolves out of the solid mass into the water.

BaSO4(s) + C(s) ===> BaS(s) + 2CO2(g)

Barium sulfide is water-soluble, even though barium sulfate is not.

Answer 2

Barium Sulfate And Nitric Acid