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Questions and Answers
What does a positive standard electrode potential indicate about a species?
What does a positive standard electrode potential indicate about a species?
- Hydrogen gas is a stronger oxidizing agent than the species.
- The species cannot participate in redox reactions.
- The reduced form is more stable than hydrogen gas. (correct)
- The species can only act as a reducing agent.
How does lithium behave in terms of its standard electrode potential?
How does lithium behave in terms of its standard electrode potential?
- Lithium ion is a weak oxidizing agent. (correct)
- Lithium ion acts as a strong oxidizing agent.
- Lithium metal shows strong oxidizing properties in aqueous solution.
- Lithium metal is a weak reducing agent.
What trend is observed in standard electrode potentials as one moves down the electrode potential table?
What trend is observed in standard electrode potentials as one moves down the electrode potential table?
- The oxidizing power of species decreases. (correct)
- The reducing power of species decreases.
- The potentials become less negative.
- The oxidizing power of species increases.
Which statement accurately describes fluorine's standard electrode potential?
Which statement accurately describes fluorine's standard electrode potential?
What application utilizes standard electrode potentials for practical measurements?
What application utilizes standard electrode potentials for practical measurements?
Flashcards
Standard Electrode Potential
Standard Electrode Potential
A measure of a half-cell's tendency to gain electrons (reduction) compared to a hydrogen reference electrode.
Positive Electrode Potential
Positive Electrode Potential
Indicates a substance is more readily reduced than hydrogen.
Negative Electrode Potential
Negative Electrode Potential
Indicates hydrogen is more readily reduced than the substance.
Strong Oxidizing Agent
Strong Oxidizing Agent
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Strong Reducing Agent
Strong Reducing Agent
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Study Notes
Standard Electrode Potentials
- Standard electrode potentials provide valuable information about half-cell reduction reactions.
- A positive potential indicates a more stable reduced form compared to hydrogen gas.
- A negative potential indicates a more stable hydrogen gas form compared to reduced form.
- Fluorine gas (F₂) has the highest potential, making it a strong oxidizing agent.
- Fluoride ions (F⁻) are weak reducing agents.
- Lithium has the lowest potential, meaning lithium ions are weak oxidizing agents and lithium metal is a strong reducing agent.
- As you go down the table (from top to bottom), the standard electrode potential decreases.
- This results in a decrease in oxidizing power of species on the left and an increase in reducing power on the right.
Electrochemical Applications
- Electrochemical cells are used to measure pH, solubility product, equilibrium constant, and other thermodynamic properties.
- Potentiometric titrations are also based on electrochemical principles.
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