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Ag(2)S +NaCN rarr (a) (a) +Zn rarr (d)...

`Ag_(2)S +NaCN rarr (a)`
(a) `+Zn rarr (d)`
(b) is a metal. Hence `(a)` and `(b)` are

A

`Na_(2)[Zn(CN)_(4)],Zn`

B

`Na[Ag(CN)_(2)],Ag`

C

`Na_(2)[Ag(CN)_(4),Ag`

D

`Na_(3)[Ag(CN)_(4)],Ag`

Text Solution

Verified by Experts

The correct Answer is:
B
`Ag_(2)S + 4NaCN rarr underset((A))(2Na[Ag(CN)_(2)]) + Na_(2) S`
`Na[Ag(CN)_(2)] + Zn rarr Na[Zn(CN)_(2)] + Ag`.
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CENGAGE CHEMISTRY-GENERAL PRINCIPLES AND PROCESS OF ISOLATION OF ELEMENTS-Exercise (Single Correcttype)
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  2. Self-reduction of Cu(2)S to Cu can be carried out in.

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  3. Ag(2)S +NaCN rarr (a) (a) +Zn rarr (d) (b) is a metal. Hence (a) a...

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  4. During smelting, an additional is added which combines with impurites ...

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  5. The process of isolation of metals by dissolving the ore in a suitable...

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  6. Complex formed in the following methods are (I) Mond's process for p...

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  7. Casseterite ore consists of magnetic impurity named as

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  8. Find the formula of A ZnS + O(2) rarr (A) + SO(2).

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  9. Four metals and their methods of refinement are given (i) Ni,Cu,Zr,G...

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  10. Which of the following statement is correct regarding Cu extraction ?

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  11. Which of the following process is not involved in the extraction of Fe...

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  12. Carbon reduction process is not commercially applicable for which of t...

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  13. Which of the following metal can be reduced by carbon reduction as wel...

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  14. Which of the following faction is of no significance for roasting sul...

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  15. The method not used in metallurgy to refine impure metal is :

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  16. Chalcogens are

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  17. The oxidation states of Cu and Fe in chalcopyrite are, respectively,

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  18. Thermite reduction is not used for commercial extraction of the respec...

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  19. Which of the following is incorrect on the basic of the above Ellingha...

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  20. Copper can be extracted by hydrometallurgy but not zinc because

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