Practice Relation Between Emf And Gibbs Free Energy (3.5.2)

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6 sample questions

Question 1.
What is the formula relating EMF and Gibbs Free Energy?
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Look for the equation that involves EMF and energy change.
Question 2.
Define EMF.
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Think about what motivates the flow of electrons in a cell.
3Question 3.
If a reaction is spontaneous, what must be true about its EMF?
- True
- False
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Think about the implications of ΔG being negative.
4Question 4.
What is Faraday’s constant?
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Consider the charge of a single mole of electrons.
Question 5.
Determine the Gibbs free energy change for a galvanic cell that has 3 moles of electrons transferred and an EMF of 0.75 V.
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Use the formula ΔG = -nFE_cell thoughtfully, paying close attention to units.
Question 6.
How would a change in temperature affect the spontaneity of a redox reaction if an electrochemical cell operates at a constant pressure?
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Think about how temperature affects the charge dynamics of particles.

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