Calculate E°_cell and Indicate Whether the Overall Reaction Shown Is $\to$

question 13

Multiple Choice

Calculate E°_cell and indicate whether the overall reaction shown is spontaneous or nonspontaneous.
Co³⁺(aq) + e^-
Co²⁺(aq) ;E° = 1.82 V
MnO₄^-(aq) + 2H₂O(l) + 3e^-
MnO₂(s) + 4OH^-(aq) ;E° = 0.59 V
Overall reaction:
MnO₄^-(aq) + 2H₂O(l) + 3Co²⁺(aq) $\to$ MnO₂(s) + 3Co³⁺(aq) + 4OH^-(aq)

• A)E°_cell = -1.23 V,spontaneous
• B)E°_cell = -1.23 V,nonspontaneous
• C)E°_cell = 1.23 V,spontaneous
• D)E°_cell = 1.23 V,nonspontaneous
• E)E°_cell = -0.05 V,nonspontaneous

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Definitions:

Population Variance

Population Variance is a measure of the dispersion of all the values in a population from the mean, highlighting how spread out the population data points are.

Standard Deviation

Indicates how dispersed the values in a data set are, relative to the mean of the set.

Chi-Square Values

Statistical measures used in hypothesis testing, especially to determine whether categorical variables are independent.

Interval Estimation

A range of values, calculated from sample data, that is likely to contain the value of an unknown population parameter.