Consider the Following Reduction Potentials

question 107

Multiple Choice

Consider the following reduction potentials:
Cd²⁺(aq) + 2e^- Cd(s) ; E° = -0.40 V
Pb²⁺(aq) + 2e^- Pb(s) ; E° = -0.13 V
Cu²⁺(aq) + 2e^- Cu(s) ; E° = 0.34 V
Br₂(l) + 2e^- 2Br^-(aq) ; E° = 1.07 V
Under standard-state conditions,which of the following reactions is spontaneous?

• A)Cd²⁺(aq)+ Pb(s)→ Cd(s)+ Pb²⁺(aq)
• B)Pb²⁺(aq)+ Cu(s)→ Pb(s)+ Cu²⁺(aq)
• C)2Br^-(aq)+ Pb²⁺(aq)→ Br₂(l)+ Pb(s)
• D)2Br^-(aq)+ Cu²⁺(aq)→ Br₂(l)+ Cu(s)
• E)Cu²⁺(aq)+ Cd(s)→ Cu(s)+ Cd²⁺(aq)

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Definitions:

Limited Capacity

A theory that humans have a finite amount of cognitive resources available at any given time.

Positive Thinking

The practice of focusing on good and positive thoughts to achieve a desired outcome or to cope with negative situations.

Reinforcement

A process in psychology that strengthens or weakens a behavior by adding or removing a stimulus after the behavior occurs.

Individual Differences

Pertains to the distinct variations in characteristics among individuals in a population.