1.

When diliute sulphuric acid and hydrogen perioxide are added to a solution of chromate ions, an intense blue colour is produced which is stable in ether. This is due to the formation of :

Answer»

`Cr_(2)O_(3)`
`Cr_(2)O_(7)^(2-)`
`CrO_(3)`
`Cr_(2)O_(5)`

ANSWER :D


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