FeO.Cr_(2)O_(3)+Na_(2)O_(2)rarr A +B +Na_(2)O A + H_(2)O rarr underset("Red-brown ppt")(NaOH)+(C) B +H_(2)O rarr underset("Yellow")((D)) +Na^(+) (D) +2H^(+) rarr underset("Orange")((E))+H_(2)O Find the sum of peroxy linkages in A,B,C,D and E.

FeO.Cr_(2)O_(3)+Na_(2)O_(2)rarr A +B +Na_(2)O A + H_(2)O rarr underse

1.	FeO.Cr_(2)O_(3)+Na_(2)O_(2)rarr A +B +Na_(2)O A + H_(2)O rarr underset("Red-brown ppt")(NaOH)+(C) B +H_(2)O rarr underset("Yellow")((D)) +Na^(+) (D) +2H^(+) rarr underset("Orange")((E))+H_(2)O Find the sum of peroxy linkages in A,B,C,D and E.
Answer» Solution :`FeO.Cr_(2)O_(3)+Na_(2)O_(2) rarr underset((A))(2NaFeO_(2))+ underset((B))(4Na_(2)CrO_(4))+2Na_(2)O` `underset((A))(2NaFeO_(2))+H_(2)O rarr NaOH + underset("Red BROWN PPT")underset((C))(Fe_(2)O_(3))` `underset((B))(Na_(2)CrO_(4))+H_(2)O rarr underset((D))(CrO_(4)^(-2)) +2Na^(+)` `underset((D))(CrO_(4)^(-2)) +2H^(+) rarr underset(("Orange"))underset((E))(Cr_(2)O_(7)^(2-))+H_(2)O`