Question
How is standard cell potential calculated from electrode potentials?
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Answer
Ecell∘=Ecathode∘−Eanode∘.
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Question
What does a positive Ecell∘ tell you about a cell, and how is it related to ΔG∘?
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Answer
The cell is galvanic and spontaneous; ΔG∘=−nFE∘.
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Question
Why is a biological membrane modeled as a capacitor?
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Answer
It acts as a dielectric capacitor separating charge across the membrane.
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Question
What mainly produces the resting membrane potential near −70 mV?
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Answer
High K+ permeability plus the Na+/K+ pump.
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