Write the chemical equations for the Mond pro | vedclass

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(A) The Mond process is a technique used to extract and purify nickel. In this process,impure nickel is heated in a stream of carbon monoxide $(CO)$ a

Vedclass · Accepted Answer

$Ni + 4CO \xrightarrow{330-350 \ K} Ni(CO)_4$ and $Ni(CO)_4 \xrightarrow{450-470 \ K} Ni + 4CO$

Vedclass · Answer

(A) The Mond process is a technique used to extract and purify nickel. In this process,impure nickel is heated in a stream of carbon monoxide $(CO)$ at $330-350 \ K$ to form a volatile nickel tetracarbonyl complex: $Ni(s) + 4CO(g) \xrightarrow{330-350 \ K} Ni(CO)_4(g)$. The volatile nickel tetracarbonyl is then subjected to higher temperatures $(450-470 \ K)$,causing it to decompose into pure nickel and carbon monoxide: $Ni(CO)_4(g) \xrightarrow{450-470 \ K} Ni(s) + 4CO(g)$.

Write the chemical equations for the Mond process used for the refining of nickel.

Similar Questions

Match the following:
| List-$I$ (Refining Methods) | List-$II$ (Metal to be refined) |
| :--- | :--- |
| $(A)$ Zone refining | $(I)$ Titanium |
| $(B)$ Poling | $(II)$ Tin |
| $(C)$ Liquation | $(III)$ Gallium |
| $(D)$ Vapour phase refining | $(IV)$ Copper |

Assertion : Lead,tin and bismuth are purified by liquation method.
Reason : Lead,tin and bismuth have low $m.p.$ as compared to impurities.

When the sample of copper with zinc impurity is to be purified by electrolysis,the appropriate electrodes are:
Cathode,Anode

In the liquation process used for tin $(Sn)$,the metal

The method of zone refining of metals is based on the principle of

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