Aqueous solution of a salt `+ MgSO_(4)` solution `to` no precipitate in cold `overset("Heating")to` White precipitate appears. The salt contains the acidic radical :

Options

A. `CO_(3)^(2-)`
B. `HCO_(3)^(-)`
C. `SO_(3)^(2-)`
D. `C_(2)O_(4)^(2-)`

Answer

B

Explanation

`HCO_(3)^(-)+Mg^(2+) to Mg(HCO_(3))_(2)(No PPt) overset(Delta)to Mg CO_(3) darr`