Advertisements
Advertisements
प्रश्न
How will you convert the following:
[Ag(CN)2]− to Ag
Advertisements
उत्तर
[Ag(CN)2]− to Ag
The metal is recovered from the complex by reduction or displacement method using a more electropositive zinc metal.
\[\ce{2[Ag(CN)2]- +Zn -> 2Ag + [Zn(CN)4]^2-}\]
APPEARS IN
संबंधित प्रश्न
What is the role of cryolite in the extraction of aluminium?
What is the role of CO in the extraction of Iron?
Draw a neat, well labelled diagram of electrolytic cell for extraction of aluminium
Bauxite has the composition
Metals which occur in their native state in nature:
In the extraction of aluminium by Hall-Heroult process, purified \[\ce{Al2O3}\] is mixed with \[\ce{CaF2}\] to:
(i) lower the melting point of \[\ce{Al2O3}\].
(ii) increase the conductivity of molten mixture.
(iii) reduce \[\ce{Al^{3+}}\] into \[\ce{Al(s)}\].
(iv) acts as catalyst.
Which of the following is not an ore of magnesiuim?
Which of the following statements, about the advantage of roasting of sulphide ore before reduction is not true?
Match List I with List II.
| List - I | List - II | ||
| a. | Siderite | I. | FeCO3 |
| b. | Malachite | II. | CuCO3 · Cu(OH)2 |
| c. | Sphalerite | III. | ZnS |
| d. | Calamine | IV. | ZnCO3 |
Choose the correct answer from the option given below.
Match List - I with List - II.
| List - I | List - II | ||
| (One) | (Composition) | ||
| (A) | Siderite | (I) | FeCO3 |
| (B) | Malachite | (II) | CuCO3 · Cu(OH)2 |
| (C) | Sphalerite | (III) | ZnS |
| (D) | Calamine | (IV) | ZnCO3 |
Choose the correct answer from the options given below:
