1.

To a solution of a salt, MgSO_4 solution is added and white ppt. appears only on heating. The acid radical in the salt is

Answer»

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

Solution :`2NaHCO_(3)+MgSO_(4) to underset("Soluble")(Mg(HCO_(3))_(2))+H_(2)+CO_(2)`
`Mg(HCO_(3))_(2) OVERSET(Delta)tounderset("WHITE PPT.")(MgCO_(3) darr) +H_(2)O +CO_(2)`


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