Use the Standard Half-Cell Potentials Listed Below to Calculate the Standard

question 18

Multiple Choice

Use the standard half-cell potentials listed below to calculate the standard cell potential for the following reaction occurring in an electrochemical cell at 25°C.(The equation is balanced.) 2 K(s) + I₂(s) → 2 K⁺(aq) + 2 I⁻(aq)
K⁺(aq) + e⁻ → K(s) E° = -2.93 V
I₂(s) + 2 e⁻ → 2 I⁻(aq) E° = +0.54 V

• A) +6.40 V
• B) +1.85 V
• C) -5.32 V
• D) +3.47 V
• E) +5.32 V

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Definitions:

At-Risk Rules

Tax regulations limiting the amount of deductible losses from certain types of investments to the amount actually at risk.

Passive Activity

Economic activities in which the taxpayer does not materially participate, like rental property, often with distinct tax rules.

Suspended Passive Losses

Losses from passive activities that exceed income from passive activities, which cannot be deducted in the current year and must be carried forward to future tax years.

At-Risk

The at-risk rules limit the amount of loss a taxpayer can claim to the amount actually at risk in the investment activity.