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CO(3)^(-) ion and HCO(3)^(-) ions can ...

`CO_(3)^(-)` ion and `HCO_(3)^(-)` ions can be distinguished from each other by several reagents like soluble salts of `Ca^(2+), Sr^(2+), Ba^(2+), Zn^(2+), Mg^(2+), Pb^(2+), Cu^(2+), Hg^(2+), Ag^(+)`, etc. But all these reagents cannot be utilized for detection of both the radicals when they are present together.
`Zn^(2+)` cation forms a white ppt. with `CO_(3)^(2-)` but no precipitate is formed with `HCO_(3)^(-)` .The formula of the white precipitate is

A

`ZnCO_(3).3Zn(OH)_(2)`

B

`ZnCO_(3)`

C

`Zn(OH)_(2).3ZnCO_(3)`

D

None of these

Text Solution

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The correct Answer is:
A
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