1.

In acidic medium, CrO_(4)^(2-) changes to

Answer»

`Cr_(2)O_(7)^(2-)`
`Cr^(3+)`
`Cr(IV)`
`Cr_(2)O_(3)`

Solution :In acidic condition, chromate ions are changed to dichromate ions.
`UNDERSET("Yellow")(2CrO_(4)^(2-))+2H^(+)rarrunderset("ORANGE")(Cr_(2)O_(7^(2-)))+H_(2)O`


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