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A sodium salt on treatment with MgCl(2) ...

A sodium salt on treatment with `MgCl_(2)` gives white precipitate only on heating. The anion of the sodium salt is `:`

A

`HCO_(3)^(-)`

B

`CO_(3)^(2-)`

C

`NO_(3)^(-)`

D

`SO_(4)^(2-)`

Text Solution

Verified by Experts

`2NaHCO_(3) overset(Delta) to Na_(2)CO_(3)+CO_(2) uarr+H_(2)O`
`Na_(2)CO_(3)+MgCl_2to underset("White ppt.")(MgCO_(3)) +2NaCl`
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