1.

BaCl_2 lsolution gives a white ppt, with a solution of an acid radical which dissolves in dil. HCI with the evolution of a colourless, pungent smelling gas. The acid radical may be

Answer»

`SO_(4)^(2-)`
`S^(2-)`
`SO_(3)^(2-)`
`CO_(3)^(2-)`

Solution :`SO_(3)^(2-) + Ba^(2+) to underset("White PPT.")(BaSO_(3))`
`BaSO_(3) + 2 HCl to BaCl_2 + SO_2 uarr + H_(2) O`


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