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.

Answer 1

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.

\[\ce{Ni + 4CO ->[330 - 450 K] Ni(CO)4}\]

\[\ce{Ni(CO)4 ->[450 - 470 k] Ni + 4CO}\]