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

---

Definitions:

Interaction Effect

A phenomenon in statistical analysis indicating that the effect of one variable on a certain outcome depends on the level of another variable.

Levels

Distinct categories or values that independent or dependent variables can take in a study or experiment.

dfWG

Degrees of freedom within groups, a concept in statistical analysis that represents the number of independent pieces of information available to estimate a parameter or calculate a statistic within a subset or group.

Degrees of Freedom

The total amount of discrete variables or numbers that are able to fluctuate within a study without breaking any limitations.