Which of the Following Equations Describes the Reaction of Copper

question 103

Multiple Choice

Which of the following equations describes the reaction of copper metal with concentrated nitric acid?

• A)4Cu(s)+ 10H₃O⁺(aq)+ NO₃^-(aq)→ 4Cu²⁺(aq)+ NH₄⁺(aq)+ 13H₂O(l)
• B)5Cu(s)+ 12H₃O⁺(aq)+ 2NO₃^-(aq)→ 5Cu²⁺(aq)+ N₂(g)+ 18H₂O(l)
• C)Cu(s)+ 4H₃O⁺(aq)+ 2NO₃^-(aq)→ Cu²⁺(aq)+ 2NO₂(g)+ 6H₂O(l)
• D)3Cu(s)+ 8H₃O⁺(aq)+ 2NO₃^-(aq)→ 3Cu²⁺(aq)+ 2NO(g)+ 12H₂O(l)
• E)4Cu(s)+ 10H₃O⁺(aq)+ 2NO₃^-(aq)→ 4Cu²⁺(aq)+ N₂O(g)+ 15H₂O(l)

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Definitions:

Spiral Organ

A structure located in the cochlea of the inner ear responsible for converting sound vibrations into electrical signals.

Semicircular Ducts

Fluid-filled passages in the inner ear that are sensitive to rotational movements of the head, aiding in the sense of balance.

Equilibrium

A state of balance or stability within a system, particularly in reference to bodily functions or chemical reactions.

Vestibule

An entrance area or space, such as the central cavity of the labyrinth of the ear, which connects to the cochlea and semicircular canals.