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Questions and Answers
What is the purpose of connecting the electrode to another half-cell of known potential when measuring potential difference?
What is the purpose of connecting the electrode to another half-cell of known potential when measuring potential difference?
In a cell diagram, how is the hydrogen electrode represented?
In a cell diagram, how is the hydrogen electrode represented?
Why are standard conditions necessary for a reference electrode like the standard hydrogen electrode?
Why are standard conditions necessary for a reference electrode like the standard hydrogen electrode?
What happens to the potential of an electrode if the concentration of metal ions in solution increases?
What happens to the potential of an electrode if the concentration of metal ions in solution increases?
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Which component is NOT required for a standard hydrogen electrode to function as a reference electrode?
Which component is NOT required for a standard hydrogen electrode to function as a reference electrode?
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What is the purpose of using a platinum wire coated in finely divided platinum in electrode potential measurements?
What is the purpose of using a platinum wire coated in finely divided platinum in electrode potential measurements?
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In the context of electrode potential measurements, what does SHE stand for?
In the context of electrode potential measurements, what does SHE stand for?
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What are the standard conditions required for electrode potential measurements?
What are the standard conditions required for electrode potential measurements?
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Which electrode system is connected to the hydrogen electrode system to measure standard electrode potential?
Which electrode system is connected to the hydrogen electrode system to measure standard electrode potential?
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How are standard electrode potentials typically quoted in data books?
How are standard electrode potentials typically quoted in data books?
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What does the potential difference (E) of +1.1V for the given cell indicate?
What does the potential difference (E) of +1.1V for the given cell indicate?
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Why is a high resistance voltmeter used when measuring potential difference in an electrochemical cell?
Why is a high resistance voltmeter used when measuring potential difference in an electrochemical cell?
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What is the purpose of a salt bridge in an electrochemical cell?
What is the purpose of a salt bridge in an electrochemical cell?
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Which electrode in the given cell is considered the negative terminal?
Which electrode in the given cell is considered the negative terminal?
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What happens when a very high resistance voltmeter is used during potential difference measurement in an electrochemical cell?
What happens when a very high resistance voltmeter is used during potential difference measurement in an electrochemical cell?
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What type of electrode must be used in a system that does not include a metal that can act as an electrode?
What type of electrode must be used in a system that does not include a metal that can act as an electrode?
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In the cell diagram, how are H+ ions and H2O treated when the system contains multiple species?
In the cell diagram, how are H+ ions and H2O treated when the system contains multiple species?
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What is used to separate different physical states in a half equation?
What is used to separate different physical states in a half equation?
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In the context of electrode potential measurement, why is it not possible to measure the absolute potential of a half electrode on its own?
In the context of electrode potential measurement, why is it not possible to measure the absolute potential of a half electrode on its own?
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What is the purpose of the salt bridge in a cell diagram?
What is the purpose of the salt bridge in a cell diagram?
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What is usually used to make a salt bridge in an electrochemical cell?
What is usually used to make a salt bridge in an electrochemical cell?
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Why is potassium chloride not suitable for copper systems in a salt bridge?
Why is potassium chloride not suitable for copper systems in a salt bridge?
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Why is a wire not used as a salt bridge in an electrochemical cell?
Why is a wire not used as a salt bridge in an electrochemical cell?
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In an electrochemical cell, what happens when the voltmeter is replaced with a bulb or if the circuit is short-circuited?
In an electrochemical cell, what happens when the voltmeter is replaced with a bulb or if the circuit is short-circuited?
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Which electrode always undergoes reduction in an electrochemical cell?
Which electrode always undergoes reduction in an electrochemical cell?
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Which type of cells are non-rechargeable due to having non-reversible reactions?
Which type of cells are non-rechargeable due to having non-reversible reactions?
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What is the overall reaction for the primary Lithium–manganese dioxide cell?
What is the overall reaction for the primary Lithium–manganese dioxide cell?
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In a lead-acid cell, what is the half-reaction that occurs during discharge?
In a lead-acid cell, what is the half-reaction that occurs during discharge?
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What is the standard electrode potential for the half-reaction: Zn2+(aq) + 2e- → Zn(s)?
What is the standard electrode potential for the half-reaction: Zn2+(aq) + 2e- → Zn(s)?
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What components are present in the conventional cell diagram for the Lithium-manganese dioxide cell?
What components are present in the conventional cell diagram for the Lithium-manganese dioxide cell?
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What is the equation used to calculate the EMF of a cell?
What is the equation used to calculate the EMF of a cell?
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Which half cell has a standard electrode potential value of -2.37V?
Which half cell has a standard electrode potential value of -2.37V?
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Which direction does the more negative half cell in a redox reaction tend to proceed?
Which direction does the more negative half cell in a redox reaction tend to proceed?
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What is the electrode potential for the half equation: Fe2+(aq) + 2e- → Fe(s)?
What is the electrode potential for the half equation: Fe2+(aq) + 2e- → Fe(s)?
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Which electrode will reduce and go from left to right in a redox reaction?
Which electrode will reduce and go from left to right in a redox reaction?
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In a spontaneous change, what is the value of Ecell typically?
In a spontaneous change, what is the value of Ecell typically?
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Which equation would you use to calculate the Ecell for a spontaneous change?
Which equation would you use to calculate the Ecell for a spontaneous change?
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What happens in the reaction: Zn2+(aq) + 2e- → Zn(s)?
What happens in the reaction: Zn2+(aq) + 2e- → Zn(s)?
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What is the standard electrode potential for Cu2+ (aq) | Cu (s)?
What is the standard electrode potential for Cu2+ (aq) | Cu (s)?
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