Among the following observations, the correct one that differentiates between `SO_(3)^(2-)` and `SO_(4)^(2-)` is-

Options

A. both form precipitate with `BaCl_(2) ,SO_(3)^(2-)` dissolves in HCl but `SO_(4)^(2-)` does not
B. `SO_(3)^(2-)` forms precipitate with `BaCl_(2),SO_(4)^(2-)` does not
C. `SO_(4)^(2-)` forms precipitate with `BaCl_(2),SO_(3)^(2-)` does not
D. both form precipitate with `BaCl_(2),SO_(4)^(2-)` dissolves in HCl but `SO_(3)^(2-)` does not

Answer

B

Explanation

Both `SO_(3)^(2-)` and `SO_(4)^(2-)` react with `BaCl_(2) ` to form precipitate of `BaSO_(4)` respectively. However `BaSO_(3)` dissolves in HCl but `BaSO_(4)` in insoluble in HCl.