1.

A green chromium compound (C). Identify A, B, C. Write equations for reactions.

Answer»

SOLUTION :`A : FeCr_(2) O_(4) "" B: Na_(2)Cr_(4)"" C: Na_(2)Cr_(2) O_(7)`
`4FeCr_(2) O_(4) + 8Na_(2) CO_(3) + 7O_(2) to8Na CrO_(4) + 2Fe_(2) O_(3) + 8CO_(2)`
`(A)"" (B )`
`Na_(2) CrO_(4)+ H_(2) SO_(4) to Na_(2) Cr_(2) O_(7) + Na_(2) SO_(4) + H_(2) O`


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