57 Questions
What is the role of a salt bridge in a galvanic cell?
Prevents the solutions from mixing directly
In a zinc-copper galvanic cell, which metal acts as the anode?
Zinc
What is the function of a salt bridge in completing a galvanic cell circuit?
Maintaining charge balance
Which notation is used to represent a galvanic cell, separating phases and components?
Cell notation
What is the basis for the electrical current generated by a galvanic cell?
Flow of electrons from anode to cathode
What does setting up a zinc-copper galvanic cell in a lab involve?
Measuring mass changes of electrodes due to oxidation and reduction
In galvanic cells, what process converts chemical energy into electrical energy directly?
Spontaneous redox reactions
Why is understanding galvanic cells essential?
To grasp principles of electrochemistry and practical applications
What property makes a salt bridge crucial in galvanic cells?
Maintaining charge balance
What does a salt bridge allow in a galvanic cell?
Ions to flow between half-cells
In a galvanic cell, what process occurs at the anode?
Oxidation
What is the primary function of a galvanic cell?
To convert chemical energy into electrical energy
Which component of a galvanic cell allows the transfer of ions?
Electrolyte
In a redox reaction, what is the role of the reducing agent?
It loses electrons
What is the purpose of the salt bridge in a galvanic cell?
To maintain electrical neutrality
What is the characteristic of an oxidation reaction?
Increase in oxidation number
Which electrode in a galvanic cell is marked positive?
Cathode
What is the role of the oxidizing agent in a redox reaction?
It gains electrons
In a galvanic cell, what is the process that occurs at the cathode?
Reduction
What is the significance of oxidation numbers in redox reactions?
They determine the direction of electron flow
Which of the following statements accurately describes the role of the anode in a galvanic cell?
It is the electrode where oxidation occurs and is marked negative.
In a redox reaction, what is the role of the oxidizing agent?
It is the substance that gains electrons and is reduced.
Which component of a galvanic cell contains ions of the metal electrode and allows the transfer of ions?
The electrolyte
In a redox reaction, an increase in oxidation number is associated with which process?
Oxidation
What is the primary function of a galvanic cell?
To convert chemical energy into electrical energy
Which of the following statements accurately describes the role of the reducing agent in a redox reaction?
It is the substance that donates electrons.
What is the primary function of the salt bridge in a galvanic cell?
To maintain electrical neutrality in the cell
Which electrode in a galvanic cell is marked as positive?
The cathode
In a redox reaction, a decrease in oxidation number is associated with which process?
Reduction
Which of the following statements accurately describes the role of the electrolyte in a galvanic cell?
It is the medium that allows the transfer of ions in each half-cell.
What is the role of the salt bridge in a galvanic cell?
Preventing the solutions from mixing directly
What does the cell notation used for a galvanic cell represent?
The flow of electrons from anode to cathode
Why is measuring the mass of zinc and copper electrodes before and after the reaction important in a lab setup?
To observe changes due to oxidation and reduction
In a galvanic cell, what occurs at the cathode?
Ions gain electrons and form metal
What is the primary function of cell notation in representing a galvanic cell?
To separate different phases and components
Why is the movement of electrons from anode to cathode crucial in a galvanic cell?
To maintain charge balance
What characteristic distinguishes a reducing agent in a redox reaction?
Gains electrons and is oxidized
Which of the following is NOT a fundamental component of a galvanic cell?
Transformer
In a redox reaction, which of the following is the correct relationship between the oxidation number and the process?
Oxidation is characterized by an increase in oxidation number, while reduction sees a decrease in oxidation number.
Which of the following statements accurately describes the role of the reducing agent in a redox reaction?
The reducing agent loses electrons and is reduced.
In a galvanic cell, which electrode is marked as the positive terminal?
The cathode
What is the primary function of the salt bridge in a galvanic cell?
To allow the transfer of ions between the half-cells
In a zinc-copper galvanic cell, which metal acts as the anode?
Zinc
What is the basis for the electrical current generated by a galvanic cell?
The spontaneous redox reaction occurring in the cell
Which of the following statements accurately describes the role of the oxidizing agent in a redox reaction?
The oxidizing agent gains electrons and is reduced.
What is the primary function of the electrolyte in a galvanic cell?
To allow the transfer of ions between the half-cells
What is the significance of measuring the mass of zinc and copper electrodes before and after the reaction in a lab setup?
To verify the conservation of mass in the redox reaction
In a galvanic cell, which of the following processes occurs at the cathode?
The reduction of metal ions to form metal atoms
What is the primary function of the cell notation used to represent a galvanic cell?
To indicate the direction of electron flow
In the redox reactions occurring in a galvanic cell, what property distinguishes the reducing agent?
It donates electrons and decreases its oxidation number
What is the primary reason for measuring the mass of zinc and copper electrodes before and after the reaction in a laboratory setup?
To observe changes due to oxidation and reduction
In the context of galvanic cells, what is the primary function of the salt bridge?
To maintain electrical neutrality by allowing ion flow
In a redox reaction, a decrease in oxidation number is associated with which process?
Reduction
What is the primary reason for understanding galvanic cells?
To comprehend the principles of electrochemistry
In a galvanic cell, what is the characteristic of an oxidation reaction occurring at the anode?
The metal atoms lose electrons
What is the primary function of a galvanic cell in converting chemical energy to electrical energy?
Providing a pathway for the flow of electrons through an external circuit
In a zinc-copper galvanic cell, which metal acts as the cathode?
Copper
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