A white precipitate was formed when BaCl\(_{2(aq)}\) was added to an aqueous solution
of a salt X. The precipitate dissolved in dilute HCl with rapid effervescence. Salt X is likely to contain
- SO\(_{4}\) \(^{2-}\) ions
- SO\(_{3}\) \(^{2-}\) ions
- NO\(_{3}\)- ions
-
SO\(_{3}\) \(^{2-}\)- ions
The correct answer is: D
Explanation
Effervescence is the formation of gas bubbles in a liquid by a chemical reaction. An example of effervescence is the release of carbon dioxide which bubbles as a gas from the liquid when limestone chips, which are composed of calcium carbonate, are added to dilute hydrochloric acid.