Calculate Δ_rG° for the Disproportionation Reaction of Copper(I)ion (Cu⁺)at 25

question 1

Multiple Choice

Calculate Δ_rG° for the disproportionation reaction of copper(I) ion (Cu⁺) at 25 °C. 2 Cu⁺(aq) → Cu²⁺(aq) + Cu(s)
The standard reduction potentials are as follows:
Cu⁺(aq) + e^- → Cu(s)
E° = +0.518 V
Cu²⁺(aq) + 2 e^- → Cu(s)
E° = +0.337 V

• A) -165 kJ/mol⋅rxn
• B) -135 kJ/mol⋅rxn
• C) -34.9 kJ/mol⋅rxn
• D) +17.5 kJ/mol⋅rxn
• E) +135 kJ/mol⋅rxn

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Definitions:

Collecting Ducts

Tubules in the kidneys that receive urine from the nephrons and transport it into the renal pelvis and ureter.

Reabsorbed

The process by which substances are taken back into the blood from the filtrate produced in the kidneys.

Concentration Gradient

A variation in the concentration of a substance across a distance; a key factor in diffusion processes.

Loop Of Henle

A section of the nephron in the kidney that concentrates urine and reabsorbs water and ions.