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Which of the following can be used to di...

Which of the following can be used to distinguish between `CO_(3)^(2-)` and `HCO_(3)^(-)`?

A

`MgCI_(2)`

B

`HgCI_(2)`

C

`Pb(CH_(3)COO)_(2)`

D

`AgNO_(3)`

Text Solution

Verified by Experts

The correct Answer is:
A
`{:(MgCI_(2)+2HCO_(3)^(-)rarr,Mg(HCO_(3))_(2)),(," "darrDelta),(," "MgCO_(3)+H_(2)O+CO_(2)uarr):}`
`CO_(3)^(2-) +4Hg^(2+) +3H_(2)O rarr Hg_(4)O_(3)CO_(3)darr` (Reddish brown ppt.)
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