Answer
Verified
395.4k+ views
Hint: Mond process is a technique to extract and purify nickel. This process converts nickel oxides into pure nickel. The nickel oxide and impurities react with the hydrogen gas to form an impure solid nickel. Further, nickel reacts with carbon monoxide and forms nickel carbonyl.
Complete step by step answer:
Nickel is recovered through extractive metallurgy. It is extracted from its ores by conventional roasting and reduction processes that yield a metal of greater than $75\% $ purity.
Mond process is a technique to extract and purify nickel. Carbon monoxide complexes with nickel readily and reversibly to give nickel carbonyl. The steps are listed below:
Firstly, impure nickel is reacted with excess carbon monoxide at ${60^ \circ }C - {80^ \circ }C$to form nickel carbonyl gas. (Leaving the impurities as solids)
Impure nickel +$CO$$\xrightarrow{{60 - {{80}^ \circ }c}}Ni{(CO)_4}\xrightarrow{{{{180}^ \circ }C}}Ni + 4CO$
After that the mixture of excess of carbon monoxide and nickel is heated to ${180^ \circ }C$.
On heating, Nickel tetracarbonyl decomposes to give nickel.
Therefore, the metal is obtained by thermal decomposition.
Hence, option B is correct.
Note:
Thermal decomposition is a chemical decomposition caused by heat. The reaction is generally endothermic as heat is required to break chemical bonds in the compound undergoing decomposition. A thermal decomposition may be a reversible or irreversible reaction. Decomposition of calcium carbonate to calcium oxide and carbon dioxide on heating is an important decomposition reaction used in various industries.
Complete step by step answer:
Nickel is recovered through extractive metallurgy. It is extracted from its ores by conventional roasting and reduction processes that yield a metal of greater than $75\% $ purity.
Mond process is a technique to extract and purify nickel. Carbon monoxide complexes with nickel readily and reversibly to give nickel carbonyl. The steps are listed below:
Firstly, impure nickel is reacted with excess carbon monoxide at ${60^ \circ }C - {80^ \circ }C$to form nickel carbonyl gas. (Leaving the impurities as solids)
Impure nickel +$CO$$\xrightarrow{{60 - {{80}^ \circ }c}}Ni{(CO)_4}\xrightarrow{{{{180}^ \circ }C}}Ni + 4CO$
After that the mixture of excess of carbon monoxide and nickel is heated to ${180^ \circ }C$.
On heating, Nickel tetracarbonyl decomposes to give nickel.
Therefore, the metal is obtained by thermal decomposition.
Hence, option B is correct.
Note:
Thermal decomposition is a chemical decomposition caused by heat. The reaction is generally endothermic as heat is required to break chemical bonds in the compound undergoing decomposition. A thermal decomposition may be a reversible or irreversible reaction. Decomposition of calcium carbonate to calcium oxide and carbon dioxide on heating is an important decomposition reaction used in various industries.
Recently Updated Pages
Basicity of sulphurous acid and sulphuric acid are
Three beakers labelled as A B and C each containing 25 mL of water were taken A small amount of NaOH anhydrous CuSO4 and NaCl were added to the beakers A B and C respectively It was observed that there was an increase in the temperature of the solutions contained in beakers A and B whereas in case of beaker C the temperature of the solution falls Which one of the following statements isarecorrect i In beakers A and B exothermic process has occurred ii In beakers A and B endothermic process has occurred iii In beaker C exothermic process has occurred iv In beaker C endothermic process has occurred
What is the stopping potential when the metal with class 12 physics JEE_Main
The momentum of a photon is 2 times 10 16gm cmsec Its class 12 physics JEE_Main
How do you arrange NH4 + BF3 H2O C2H2 in increasing class 11 chemistry CBSE
Is H mCT and q mCT the same thing If so which is more class 11 chemistry CBSE
Trending doubts
Difference Between Plant Cell and Animal Cell
Difference between Prokaryotic cell and Eukaryotic class 11 biology CBSE
Fill the blanks with the suitable prepositions 1 The class 9 english CBSE
Change the following sentences into negative and interrogative class 10 english CBSE
Summary of the poem Where the Mind is Without Fear class 8 english CBSE
Give 10 examples for herbs , shrubs , climbers , creepers
Write an application to the principal requesting five class 10 english CBSE
What organs are located on the left side of your body class 11 biology CBSE
What is the z value for a 90 95 and 99 percent confidence class 11 maths CBSE