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Question
Assertion: Nickel can be purified by Mond process.
Reason: \[\ce{Ni(CO)4}\] is a volatile compound which decomposes at 460 K to give pure Ni.
Options
Both assertion and reason are true and reason is the correct explanation of assertion.
Both assertion and reason are true but reason is not the correct explanation of assertion.
Assertion is true but reason is false.
Assertion is false but reason is true.
Assertion and reason both are wrong.
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Solution
Both assertion and reason are true and reason is the correct explanation of assertion.
Explanation:
Nickel is heated in a stream of carbon monoxide forming a volatile complex nickel tetracarbonyl which on further decomposition gives pure Ni. THis process is called mond process.
\[\ce{Ni + 4CO ->[330 - 450 K] Ni(CO)4}\]
\[\ce{Ni(CO)4 ->[450 - 470 k] Ni + 4CO}\]
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