Examine the Following Half-Reactions and Select the Weakest Reducing Agent

question 91

Multiple Choice

Examine the following half-reactions and select the weakest reducing agent among the substances. Cr(OH) ₃(s) + 3e⁻ ⇄ Cr(s) + 3OH⁻(aq) E° = −1.48 V
SnO₂(s) + 2H₂O(l) + 4e⁻ ⇄ Sn(s) + 4OH⁻(aq) E° = −0.945 V
MnO₂(s) + 4H⁺(aq) + 2e⁻ ⇄ Mn²⁺(aq) + 2H₂O(l) E° = 1.224 V
Hg₂SO₄(s) + 2e⁻ ⇄ 2Hg(l) + SO₄²⁻(aq) E° = 0.613 V

• A)Cr( s)
• B)Sn( s)
• C)Mn ²⁺( aq)
• D)Hg( l)
• E)OH ⁻( aq)

---

Definitions:

Task Time

An organic sense of time in which work is shaped by the demands of the task to be performed. For example, work in a farming community is shaped by the seasons.

Surgeons

Medical professionals specialized in performing surgical operations to treat diseases, injuries, or deformations.

Cabinet Makers

Skilled craftsmen who create fine wood furniture and detailed cabinetry work.

Sense of Agency

The feeling or belief that one is in control of their actions and can effect change in the world or their own lives.