1.

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

Answer»

Both form precipitate with `BaCl_(2), SO_(3)^(2-)` dissoves in HCl but `SO_(4)^(2-)` does not
`SO_(3)^(2-)` FORMS precipitate with `BaCl_(2), SO_(4)^(2-)` does not
`SO_(4)^(2-)` forms precipitate with `BaCl_(2), SO_(3)^(2-)` does not
Both form precipitate with `BaCl_(2),SO_(4)^(2-)` DISSOLVES in HCl but `SO_(3)^(2-)` does not.

Solution :It is the correct ANSWER. Both form white precipitates. `BaSO_(3)` dissolves in dilute HCl but `BaSO_(4)` does not.
`underset(("White ppt."))(BaSO_(3))+2HCl to underset(("soluble"))(BaCl_(2))+H_(2)O+SO_(2)`


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