In the Mond Process, Nickel Is Purified by

question 24

Multiple Choice

In the Mond process, nickel is purified by

• A) dissolving the crude ore in sulfuric acid, and precipitating the nickel(II) ion as the sulfate salt.
• B) dissolving the crude ore in a lye (NaOH) solution, and precipitating the nickel(II) ion as the hydroxide salt.
• C) heating the crude ore to its melting point and electrolytically reducing the nickel(II) ions to form the metal.
• D) passing sodium gas over the crude ore at high temperatures, chemically reducing the nickel(II) to nickel metal.
• E) passing carbon monoxide over the impure metal at high temperature, forming the volatile Ni(CO)₄ which is removed as a gas.

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