What Is the Balanced Spontaneous Reaction and Standard Cell Potential $\to$

question 54

Multiple Choice

What is the balanced spontaneous reaction and standard cell potential of an electrochemical cell constructed from half cells with the following half reactions?
Fe²⁺(aq) + 2e^- $\to$ Fe(s) $~~~~~~~~$$~~~~~~~~$ E° = -0.440 V
Pb²⁺(aq) + 2e^- $\to$ Pb(s) $~~~~~~~~$$~~~~~~~~$ E° = -0.130 V

• A) Pb²⁺(aq)+ Fe(s)\(\to\)Pb(s)+ Fe²⁺(aq) =0.310 V
• B) Pb(s)+ Fe²⁺(aq)\(\to\) Pb²⁺(aq)+ Fe(s) =-0.310 V
• C) Pb²⁺(aq)+ Fe²⁺(aq)\(\to\) Pb(s)+ Fe(s) =-0.570 V
• D) Pb²⁺(aq)+ Fe(s)\(\to\)Pb(s)+ Fe²⁺(aq) =0.155 V
• E) Pb(s)+ Fe²⁺(aq)\(\to\) Pb²⁺(aq)+ Fe(s) =-0.155 V

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Definitions:

Demand Curve

A graph showing the relationship between the price of a good and the quantity demanded, with a typical downward slope indicating that demand increases as price decreases.

Producer's Surplus

The difference between what producers are willing to accept for a good or service and what they actually receive.

Marginal Cost Curve

A graph showing the change in total production cost that comes from making or producing one additional unit.

Competitive Firm

A company operating in a market where it has little to no market power, and thus sets its prices based on the market conditions.