The Final Step of the Purification of Copper Involves Electrorefining

question 10

Multiple Choice

The final step of the purification of copper involves electrorefining in which copper is separated from nickel and iron by being reduced at the cathode of a cell. Why are nickel and iron not reduced?

• A)Their reduction potentials are more positive than copper's.
• B)Their reduction potentials are more negative than copper's.
• C)They cannot be deposited on a copper electrode.
• D)Their reduction potentials are more negative than water's.
• E)Their reduction requires large overvoltages.

---

Definitions:

Hierarchical

Organized in a system of levels with higher ranks or classes having authority over lower ones.

Organic Structures

Flexible and adaptive organizational forms that emphasize decentralized decision-making and a high degree of informal communication.

Mechanistic

A highly structured and formal organizational design that emphasizes hierarchy, fixed duties, and centralized decision-making.

Centralization

The extent to which decision-making power is localized in a particular part of an organization.