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A bluish green coloured compound 'A' on ...

A bluish green coloured compound 'A' on heating gives two products 'B' and 'C'. A metal 'D' is deposited on passing `H_(2)` through heated 'B'. The compound 'A' and 'B' are insoluble in water. 'B' is black in colour, dissolves in HCI and on treatment with `K_(4)[Fe(CN)_(6)]` gives a chocolate brown ppm of compound 'E'. 'C' is colourless, odourless gas and turns lime water milkly.
The compounds 'D' and 'E' are respectively

A

`Cu, Cu_(2)[Fe(CN)_(6)]`

B

`Fe, Cu_(2)[Fe(CN)_(6)]`

C

`Cr, CuCO_(3)`

D

Zn, CuO

Text Solution

Verified by Experts

The correct Answer is:
A
`underset(A)(CuCO_(3)) to underset("Black")(CuO)+underset(C)(CO_(2))`
`CuO+H_(2) overset(Delta)to underset(D)(Cu)+H_(2)O`
`CuO+2HCl to CuCl_(2)+H_(2)O`
`2Cu^(2+)+K_(4)[Fe(CN)_(6)] to Cu_(2) underset(underset(E)("chacelate brown ppt"))([Fe(CN)_(6)]) darr`
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