1.

For the given aqueous reaction, which of the statement(s) is (are) true ?

Answer»

The FIRST reaction is a redox reaction
White precipitate is `Zn_(3)[Fe(CN)_(6)]_(2)`
Addition of filtrate to starch solution gives BLUE colour.
White precipitate is soluble in NAOH solution.

Solution :`underset("(EXCESS)")(KI)+K_(3)[Fe(CN)_(6)] overset("dil. "H_(2)SO_(4))(rarr) I_(2)+K_(4)[Fe(CN)_(6)]`
`I_(2)+KI hArr KI_(3)` (brown -yellow sol)'
`{:(Zn^(2+)+K_(4)[Fe(CN)_(6)] rarr K_(2)Zn_(3)[Fe(CN)_(6)]_(2)+K^(+)),("(white ppt)"),("or"),(""Zn_(2)[Fe(CN)_(6)]+K^(+)),("(white ppt)"):}`


Discussion

No Comment Found

Related InterviewSolutions