CameraIcon

SearchIcon

MyQuestionIcon

1

You visited us 1 times! Enjoying our articles? Unlock Full Access!

Cyanide or Macarthur Forrest Process

Ag is precipi...

Question

Ag is precipitated when Zn is added to $[A g (C N)_{2}]^{-}$ .
If $2 [A g (C N)_{2}]^{-} + Z n \to [Z n (C N)_{4}]^{2 -} + 2 A g$ is the reaction enter 1 else 0.

Open in App

Solution

Process of extraction of $A g$ (silver) is called cyanide process as sodium cyanide solution is used. The ore is crushed, concentrated and then treated with $N a C N$ solution. The reaction forms sodium-argento cyanide.
$A g S + N a C N ⇌ 2 N a [A g (C N)_{2}] + N a_{2} S$
This solution of sod. argento cyanide combines with $Z n$ -dust and form sod-tetracyano zincate and silver is precipitated out.
$Z n + 2 N a [A g (C N)_{2}] ⟶ N a_{2} [Z n (C N)_{4}] + 2 A g$
Hence, 1.

Suggest Corrections

thumbs-up

0

Similar questions

Q. The chemical reactions involved in the extraction of metallic silver from argentite is -

2 N a [A g (C N)_{2}] + Z n \to N a_{2} [Z n (C N)_{4}] + 2 A g ↓

If the statement is true enter 1 else 0.

Q. Name of the process is cyanide process, in which we added Zn to soluble

[A g (C N)_{2}]^{-}

to get Ag. If true enter 1 else 0.

Q. In cyanide method, silver metal is obtained as given in the following reaction:

2 K [A g {(C N)}_{2}] + Z n ⟶ K_{2} [Z n {(C N)}_{4}] + 2 A g

Q. Zinc is used for the recovery of Ag from the complex

[A g (C N)_{2}] -

while copper is not used because Zn is powerful reducing agent than Cu.
If true enter 1,else enter 0.

Q. Silver metal is recovered industrially by using the chemistry shown below. Which of the following statements is/are not true ?

2 K [A g (C N)_{2}] + Z n \to 4 K_{2} [Z n (C N)_{4}] + 2 A g

View More

Join BYJU'S Learning Program

similar_icon

Related Videos

lock

Cyanide or MacArthur Forrest Process

CHEMISTRY

Watch in App

explore_more_icon

Explore more

Cyanide or Macarthur Forrest Process

Standard XII Chemistry

Join BYJU'S Learning Program

CrossIcon