`Na_(2)CO_(3)` cannot be used to identify

Options

A. `CO_(3)^(2-)`
B. `SO_(3)^(2-)`
C. `S^(2-)`
D. `SO_(4)^(2-)`

Answer

A

Explanation

`SO_(3)^(2-),S^(2-)`and `SO_(4)^(2-)` salt form comparatively stronger acids (than `H_(2)CO_(3))` in solution hence evolve ` CO_(2)` with `Na_(2)CO_(3)` solution and give effervescence. While `CO_(3)^(2-)` does not react with `Na_(2)CO_(3)`. Solution.