1.

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

Answer»

`CO_(3)^(2-)`
`HCO_(3)^(Θ)`
`SO_(4)^(2+)`
`NO_(3)^(Θ)`

Solution :Given, `NaX+MgCl_(2)overset(Delta)(rarr)`White ppt.
`NaHCO_(3)+MgCl_(2)rarrunderset("Soluble")(MG(HCO_(3))_(2))+NaCl`
`Mg(HCO_(3))_(2)overset(Delta)(rarr)underset("White ppt".)(MgCO_(3))+H_(2)O+Co_(2)`
Hence, anion of the SODIUM salt is `HCO_(3)^(Θ)`.


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