In What Way Is Cryolite (Na₃AlF₆)used in the Production of Aluminum

question 23

Multiple Choice

In what way is cryolite (Na₃AlF₆) used in the production of aluminum?

• A) Cryolite is a catalyst,it increases the rate of aluminum reduction.
• B) Cryolite-bauxite mixtures melt at lower temperatures than pure bauxite.
• C) Cryolite makes aluminum more corrosion resistant.
• D) Cryolite is reduced to aluminum at the cathode.
• E) Cryolite is oxidized to F₂(g)at the anode.

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Definitions:

Transportation Problem

A logistical dilemma involving the determination of the most cost-efficient routing of goods from several supply points to various demand locations.

Routes

The paths or courses taken to get from one location to another, often used in logistics, navigation, and network design.

Optimal Solution

The best possible outcome or answer found through a particular process of calculation, reasoning, or problem-solving, considering all constraints and objectives.

Northwest-Corner Rule

A method used in transportation models of linear programming for finding a feasible solution by starting allocations from the northwest corner of a matrix.