Given the Following Two Half-Reactions, Write the Overall Reaction in the Direction

question 51

Multiple Choice

Given the following two half-reactions, write the overall reaction in the direction in which it is product-favored, and calculate the standard cell potential.
Pb²⁺(aq) + 2 e^- ? Pb(s)
E° = -0.126 V
Fe³⁺(aq) + e^- ? Fe²⁺(s)
E° = +0.771 V

• A) Pb²⁺(aq) + 2 Fe²⁺(s) ? Pb(s) + 2 Fe³⁺(aq); \(E _ { \text {cell } } ^ { \circ }\) = +0.897 V
• B) Pb²⁺(aq) + Fe²⁺(s) ? Pb(s) + Fe³⁺(aq); \(E _ { \text {cell } } ^ { \circ }\) = +0.645 V
• C) Pb(s) + 2 Fe³⁺(aq) ? Pb²⁺(aq) + 2 Fe²⁺(s); \(E _ { \text {cell } } ^ { \circ }\) = +1.416 V
• D) Pb(s) + 2 Fe³⁺(aq) ? Pb²⁺(aq) + 2 Fe²⁺(s); \(E _ { \text {cell } } ^ { \circ }\) = +0.897 V
• E) Pb(s) + Fe³⁺(aq) ? Pb²⁺(aq) + Fe²⁺(s); \(E _ { \text {cell } } ^ { \circ }\) = +0.645 V

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Definitions:

Volatility

The statistical measure of the dispersion of returns for a given security or market index, often associated with the degree of risk involved.

Risk Premium

The additional return an investor demands for taking on additional risk above the risk-free rate.

Expected Rate

The expected rate refers to the forecasted return on an investment or the predicted growth rate of an asset over a specific period.

Standard Deviation

A statistical measure that quantifies the dispersion or variability of a set of data points or investment returns around their mean.