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.

Appreciate the significance of visual aesthetics and audience engagement in presentations.

Identify different speaking methods and their impacts on audience interaction.

Know how to include essential information for audience convenience and engagement in presentations.

Develop backup plans and increase professional demeanor and confidence in presenting.

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Definitions:

Trading of Votes

The exchange of votes among legislators or members of a voting body to ensure mutual support for their respective proposals or interests.

Logrolling

A practice in politics where individuals or parties exchange support for each other's proposals or legislation, often regardless of the merits of the involved issues.

Elected Officials

Individuals chosen through an electoral process to hold public office and make policy decisions.

Logrolling

A practice in political decision-making processes where parties agree to vote for each other's proposed bills or policies, even if they do not have immediate personal interest, to ensure mutual benefit.