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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

The correct Answer is:
A
`MgCl_2 + 2NaHCO_3 to Mg(HCO_3)_2 (aq) + 2NaCl `
`Mg(HCO_3)_2 (aq) overset(Delta)to underset("(White ppt)")(MgCO_3) darr + H_2 O + CO_2 uarr `
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