`CuFeS_(2)+O_(2)("excess")overset(Delta)(rarr)X`(hydrated salt is blue)+`Y`(s)(Unbalanced Equation)`:`
Which is correct choice for (X) and (Y) ?

Answer

A

Explanation

`CuFeS_(2)+4O_(2)overset(Delta)(rarr)CuSO_(4)(s)+FeSO_(4)(s)`
`(A) CuSO_(4)+4KIrarrCu_(2)I_(2)+I_(2)+2K_(2)SO_(4)`
`(B)2FeSO_(2)overset(Delta)(rarr)Fe_(2)O_(3)+SO_(2)+2SO_(3)`
`(C ) CuSO_(4)+2NaOH rarr Na_(2)SO_(4)+Cu(OH)_(2)darr("insoluble in excess NaOH")`
`(D) Fe^(2+)+2K_(3)[Fe(CN)_(6)]rarrFe_(3)[Fe9CN)_(6)]_(2)("deep vlue")`