What Half-Reaction Occurs at the Cathode During the Electrolysis of Molten

question 47

Multiple Choice

What half-reaction occurs at the cathode during the electrolysis of molten potassium bromide?

• A) K(s) \(\to\)K⁺( \(\ell\) )+ e^-
• B) Br₂( \(\ell\) )+ 2e^- \(\to\) 2Br^-( \(\ell\) )
• C) 2Br^-( \(\ell\) ) \(\to\) Br₂( \(\ell\) )+ 2e^-
• D) K⁺( \(\ell\) )+ e^- \(\to\) K(s)
• E) 2H₂O( \(\ell\) )+ 2e^- \(\to\) H₂(g)+ 2OH^-(( \(\ell\) )

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Definitions:

Marginal Costs

The increase in total production cost that arises from producing one additional unit of a good or service.

Average Fixed Cost Curve

A graph that shows the fixed costs of production divided by the quantity of output produced, illustrating how these costs dilute over larger production volumes.

U-Shaped

A descriptive term often used in economics and statistics to describe a graph or curve that resembles the shape of the letter "U", indicating a particular kind of relationship or trend.

Positive Amount

A value that is greater than zero, indicating a quantity that adds to a total rather than subtracting from it.