1.

The solution of (F) on treatment with oxalicacid and then with an excess of potassium oxalate gives blue crystals of compound (G). Identify (A) to (G) and give balanced chemical equations for reactions for reactions at step. (i) to (v).

Answer»


ANSWER : The ORS is chromite `FeOCr_(2)O_(3)`.
`K_(2)Cr_(2)O_(7)+4H_(2)SO_(4)+3H_(2)C_(2)O_(4) rarr K_(2)SO_(4)+Cr_(2)(SO_(4))_(3)+6CO_(2)+7H_(2)O`
`Cr_(2) (SO_(4))_(3)+underset("(G) Blue crystal")(6K_(2)C_(2)O_(4) rarr) 2K_(3)[Cr(C_(2)O_(4))_(3)]+3K_(2)SO_(4)`


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