A white substance ‘X’ when heated in a test tube, it produces a colourless, odourless…
Chemistry · JEE Advanced · NTA Exams — d- and f-Block Elements
A white substance ‘X’ when heated in a test tube, it produces a colourless, odourless gas, leaving a residue, yellow when hot and white when cold. The residue was dissolved in dil. HCl, made alkaline with NH4Cl and NH4OH and H2S gas was passed through it. A white. ppt ‘Y’ was formed. It was dissolved in dil. HCl to give ‘Z’ which on treatment with K4[Fe(CN)6] gave bluish white precipitate.
Bluish white precipitate formed is
- Zn2[Fe(CN)6]
- K2[Zn(CN)4]
- Zn3[Fe(CN)6]2
- None of these
Answer
(A) Zn 2 [Fe(CN) 6 ]
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