a piece of chalkboard dissolvedin acid solution and the solution bubbled vigorously.The gas caused barium hydroxide solution to form a white precipitate.what is the gas given off?what is the white precipitate?write a chemical equation for the formationof the white precipitate.

Answer 1

The white ppt is BaCO3.
The gas given off is CO2.

CO3^2- + 2H^+ ==> CO2(gas) + H2O
CO2 + Ba(OH)2 ==> BaCO3(s) + H2O