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Questions and Answers
What can be inferred about a substance with a highly positive E° value?
What can be inferred about a substance with a highly positive E° value?
What happens to the sign of E° when a half-cell reaction is reversed?
What happens to the sign of E° when a half-cell reaction is reversed?
Which of the following is true about a half-cell reaction with a very negative E° value?
Which of the following is true about a half-cell reaction with a very negative E° value?
What is the effect of changing the stoichiometric coefficients of a half-cell reaction on the value of E°?
What is the effect of changing the stoichiometric coefficients of a half-cell reaction on the value of E°?
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What is a characteristic of half-cell reactions?
What is a characteristic of half-cell reactions?
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Study Notes
Redox Reactions
- From top to bottom, the strength of oxidizing agents decreases, while the strength of reducing agents increases.
- Very strong oxidizing agents are found at the top, while very strong reducing agents are found at the bottom.
Electrode Potential (E°)
- A more positive E° value indicates a greater tendency for a substance to be reduced.
- E° is the potential for the reaction as written.
- The sign of E° changes when the reaction is reversed.
Half-Cell Reactions
- Half-cell reactions are reversible.
- Changing the stoichiometric coefficients of a half-cell reaction does not affect the value of E°.
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Description
This quiz covers the characteristics of strong and weak oxidizing and reducing agents, and how to determine their strength using E° values.
