1.

To a solution of an acid radical, MgSO_4 solution is added and white ppt. appear only on heating. The acid radical may be

Answer»

`CO_(3)^(2-)`
`SO_(3)^(2-)`
`HCO_(3)`
`C_(2) O_(4)^(2-)`

Solution :`2 NaHCO_(3) + MgSO_(4) to underset("SOLUBLE")(Mg(HCO_(3))_(2)) + Na_(2) SO_(4) Mg (HCO_(3))_(2) OVERSET(Delta)(to) underset("White ppt.") (MgCO_(3)) + H_(2) O + CO_(2)`


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