In K(2)Cr(2)O(7) solution when alkali so...

In `K_(2)Cr_(2)O_(7)` solution when alkali solution of `BaCI_(2)` is added, the yellow ppt. obtained is of:

`BaCr_(2)O_(7)`

`BaCrO_(4)`

`BaCrO_(4).2H_(2)O`

none of these

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The correct Answer is:

`Cr_(2)O_(7)^(2-) overset(OH^(-))rarr CrO_(4)^(2-) overset(Ba^(2+))rarr BaCrO_(4)darr` (Yellow ppt)

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