70 Questions
What is the main function of a galvanic cell?
Convert chemical energy into electrical energy
In a galvanic cell, where do cations move towards?
Cathode
What is the direction of electron flow in a galvanic cell?
From anode to cathode
Which half-reaction takes place at the cathode of a galvanic cell?
Cu²⁺(aq) + 2e⁻ → Cu(s)
What is the role of the salt bridge in a galvanic cell?
Allows the flow of ions between half-cells to maintain electrical neutrality
Where does oxidation occur in a galvanic cell?
In the reduction half-cell
How is the overall reaction of a galvanic cell obtained?
By adding the two half-reactions
What does the standard cell notation represent in a galvanic cell setup?
The reactants and products involved
How is the electromotive force (EMF) of a cell calculated?
$E(anode) - E(cathode)$
What does a positive EMF value indicate about a reaction in a galvanic cell?
The reaction is spontaneous
What is the purpose of a salt bridge in a galvanic cell?
To maintain charge balance by allowing the flow of ions between half-cells
In a galvanic cell, where do anions move towards?
Anode
What occurs at the cathode of a galvanic cell?
Reduction
Which process converts chemical energy into electrical energy in galvanic cells?
Spontaneous redox reactions
What flows through the external circuit in a galvanic cell?
Electrons
What happens at the anode of a galvanic cell?
Oxidation
Which agent is reduced at the cathode of a galvanic cell?
$Cu^{2+}$(aq)
What is the function of cations in a galvanic cell?
Move towards the cathode for reduction
Which component allows for the flow of electrons between the two half-cells in a galvanic cell?
Electrolyte solution
What is the movement of anions in a galvanic cell related to?
Oxidation
Where does oxidation occur in a galvanic cell?
At the anode
What does a positive EMF value indicate about a reaction in a galvanic cell?
The reaction is spontaneous
In the standard cell notation for a galvanic cell, what does the double vertical line '||' represent?
A connection allowing ion movement
What is the main function of an inert electrode like Pt in a galvanic cell?
Facilitate electron transfer
How can oxidation and reduction sites be predicted in a galvanic cell from given half-cell reactions?
By comparing standard electrode potentials
Which electrode is written first in the standard cell notation for a galvanic cell?
Anode
What determines the overall cell reaction in a galvanic cell?
Addition of half-reactions without canceling electrons
What is the purpose of the salt bridge in a galvanic cell setup?
To complete the electrical circuit and prevent solutions from mixing directly
Which factor determines whether a reaction in a galvanic cell is spontaneous under standard conditions?
Electromotive force (EMF) of the cell
What role do ions play in completing the electrical circuit in a galvanic cell?
Ions facilitate movement of charge to allow continuous function of the cell
Which half-cell reaction has the higher tendency to lose electrons in a galvanic cell?
Oxidation half-cell
What is represented by the double vertical line '||' in the standard cell notation for a galvanic cell?
Salt bridge
In a galvanic cell, what does a positive EMF value indicate about the reaction under standard conditions?
The reaction is spontaneous
Which component of the galvanic cell setup allows for the flow of electrons between the two half-cells?
Inert electrode
What is the primary factor that determines whether a redox reaction in a galvanic cell is spontaneous?
Standard electrode potentials
Where does reduction occur in a galvanic cell setup?
Cathode
What is the function of an inert electrode like Pt or C in a galvanic cell when used as electrodes?
Facilitate electron flow
How is the overall cell reaction obtained in a galvanic cell from individual half-reactions?
Balancing electrons to cancel out and adding reactions
What flows through the external circuit in a galvanic cell to complete the electrical circuit?
$\text{e}^-$ (electrons)
What does the standard cell notation in a galvanic cell represent when inert electrodes are used?
Inert electrode materials
What is the main function of a salt bridge in a galvanic cell?
Helps maintain charge balance by allowing ion movement
Which direction do cations move in a galvanic cell?
Toward the cathode
What occurs at the cathode of a galvanic cell?
Reduction reaction
How do electrons flow within a galvanic cell?
From the anode to the cathode through the external circuit
What contributes to the generation of electrons in a galvanic cell?
Oxidation reaction at the anode
What is the role of an inert electrode like Pt in a galvanic cell?
Provides surface for electron transfer without participating in reactions
Where does oxidation primarily occur in a galvanic cell?
At the anode
What is the primary function of galvanic cells?
Generate electrical energy from chemical energy
What is the purpose of ion movement in a galvanic cell?
To maintain charge balance
What is the key role played by cations in a galvanic cell?
To move towards the cathode for reduction reactions
What is the primary role of the salt bridge in a galvanic cell setup?
To maintain electrical neutrality by facilitating the flow of ions between the half-cells
What determines the overall cell reaction in a galvanic cell?
The relative tendencies of the half-cell reactions to lose or gain electrons
What is the significance of a positive EMF value for a galvanic cell reaction under standard conditions?
The reaction is spontaneous and has a positive free energy change
How is the electromotive force (EMF) of a galvanic cell calculated?
By subtracting the reduction potential of the cathode from the reduction potential of the anode
Which half-reaction takes place at the cathode of a galvanic cell?
The reduction half-reaction
What is the role of an inert electrode like Pt or C in a galvanic cell?
To provide a surface for the redox reactions to occur
What is the purpose of the double vertical line '||' in the standard cell notation for a galvanic cell?
To represent the salt bridge
What is the primary factor that determines whether a redox reaction in a galvanic cell is spontaneous under standard conditions?
The relative tendencies of the half-cell reactions to lose or gain electrons
What is the direction of electron flow in a galvanic cell?
From the anode to the cathode through the external circuit
Where does oxidation primarily occur in a galvanic cell?
At the anode
What does the electromotive force (EMF) of a galvanic cell indicate when calculated using the standard reduction potentials?
The spontaneity of the redox reaction under standard conditions
In a galvanic cell, what is the function of using inert electrodes like Pt or C?
To prevent mixing of solutions and complete the electrical circuit
What is the specific role of the salt bridge in a galvanic cell setup?
Maintain electrical neutrality within the half-cells
Which factor primarily determines whether a redox reaction is spontaneous in a galvanic cell under standard conditions?
The difference in standard electrode potentials
How does oxidation occur in a galvanic cell with respect to electron transfer?
Gaining electrons at the anode
What is represented by the standard cell notation 'Zn(s) | Zn²⁺(aq) || Cu²⁺(aq) | Cu(s)' for a galvanic cell?
Oxidation of Cu and reduction of Zn
What determines whether a redox reaction in a galvanic cell is spontaneous when using standard reduction potentials?
The difference in standard electrode potentials between half-cells
What does it mean if a redox reaction in a galvanic cell has a positive electromotive force (EMF)?
The reaction is spontaneous under standard conditions
In a galvanic cell notation, what role do inert electrodes like Pt or C play when written outside the half-cell solutions?
Indicate non-reactive materials used in the setup
What does oxidation predict about a half-cell's tendency to lose electrons in a galvanic cell?
The half-cell with higher standard electrode potential loses more electrons
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