Formation of Ni(CO)₄ and subsequent its decomposition into Ni and CO makes basis of Mond's pro

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General Principles and processes of Isolation of Elements

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Formation of $Ni(CO)_4$ and subsequent its decomposition into $Ni$ and $CO$ makes basis of Mond's process

$Ni\, + \,\,4CO\,\xrightarrow{{{T_1}}}Ni{(CO)_4}\,\xrightarrow{{{T_2}}}Ni + 4CO,$ $T_1$ and $T_2$ are

$100\,^oC,\,50\,^oC$

$50\,^oC,\,100\,^oC$

$50\,^oC,\,230\,^oC$

$230\,^oC,\,50\,^oC$

Solution

Mond process is used for the refining of nickel.

Nickel is heated with $\mathrm{CO}$ to form highly volatile nickel tetracarbonyl.

it is then decomposed to pure nickel at high temperature. $\mathrm{Ni}+4 \mathrm{CO} \stackrel{50 \mathrm{O}^{\circ} \mathrm{C}}{\rightarrow} \mathrm{Ni}(\mathrm{CO})_{4} \stackrel{230 \mathrm{C}}{\rightarrow} \mathrm{Ni}+4 \mathrm{CO}$

Thus $\mathrm{T}_{1}$ and $\mathrm{T}_{2}$ are $50^{\circ} \mathrm{C}$ and $230^{\circ} \mathrm{C}$ respectively.

Standard 12

Chemistry

When $ZnS$ and $PbS$ minerals are present together, then $NaCN$ is added to separate them in the froth floatation process as a depressant, because

normal

Which of the following is not correctly matched

medium

Modern method of steel manufacturing is

easy

In the galvanizing process, iron is coated with zinc. The resulting chemical protection is most similar to that provided when

easy

Among the reactions $(a) – (d)$, the reaction(s) that does/do not occur in the blast furnace during the extraction of iron is/are

$(a)$ $\mathrm{CaO}+\mathrm{SiO}_{2} \rightarrow \mathrm{CaSiO}_{3}$

$(b) $ $3 \mathrm{Fe}_{2} \mathrm{O}_{3}+\mathrm{CO} \rightarrow 2 \mathrm{Fe}_{3} \mathrm{O}_{4}+\mathrm{CO}_{2}$

$(c)$ $\mathrm{FeO}+\mathrm{SiO}_{2} \rightarrow \mathrm{FeSiO}_{3}$

$(d)$ $\mathrm{FeO} \rightarrow \mathrm{Fe}+\frac{1}{2} \mathrm{O}_{2}$

medium

(JEE MAIN-2020)

Formation of $Ni(CO)_4$ and subsequent its decomposition into $Ni$ and $CO$ makes basis of Mond's process $Ni\, + \,\,4CO\,\xrightarrow{{{T_1}}}Ni{(CO)_4}\,\xrightarrow{{{T_2}}}Ni + 4CO,$ $T_1$ and $T_2$ are

Solution

Similar Questions

When $ZnS$ and $PbS$ minerals are present together, then $NaCN$ is added to separate them in the froth floatation process as a depressant, because

Which of the following is not correctly matched

Modern method of steel manufacturing is

In the galvanizing process, iron is coated with zinc. The resulting chemical protection is most similar to that provided when

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Formation of $Ni(CO)_4$ and subsequent its decomposition into $Ni$ and $CO$ makes basis of Mond's process

$Ni\, + \,\,4CO\,\xrightarrow{{{T_1}}}Ni{(CO)_4}\,\xrightarrow{{{T_2}}}Ni + 4CO,$ $T_1$ and $T_2$ are