Voltaic Cell Concepts and Functions

The video explains voltaic cells, also known as galvanic cells, which use spontaneous redox reactions to generate electrical energy. It details the components of a voltaic cell, including two half cells, a salt bridge, and an external circuit. The video describes the reactions at the anode and cathode, where zinc undergoes oxidation and copper undergoes reduction. It also covers the use of the activity series to determine the anode and cathode, shorthand notation for cell components, and the function of the salt bridge in maintaining charge balance.

What is another name for a voltaic cell?

• Photovoltaic cell

• Fuel cell

• Galvanic cell

• Electrolytic cell

In a voltaic cell, where does oxidation occur?

• Cathode

• External circuit

• Salt bridge

• Anode

What is the direction of electron flow in a voltaic cell?

• Cathode to salt bridge

• Salt bridge to anode

• Cathode to anode

• Anode to cathode

Which metal is the anode in a voltaic cell with zinc and copper?

• Copper

• Silver

• Zinc

• Iron

What happens to the mass of the zinc electrode during the reaction?

• It fluctuates

• It remains the same

• It decreases

• It increases

What does a double vertical line represent in the shorthand notation of a voltaic cell?

• Salt bridge

• Phase boundary

• Ion flow

• Electrode

What is the primary function of the salt bridge in a voltaic cell?

• To separate the electrodes

• To conduct electricity

• To store energy

• To balance charge by allowing ion flow

Which ions migrate to the anode in a voltaic cell?

• Anions

• Electrons

• Cations

• Neutrons

In a voltaic cell, which electrode is positive?

• Anode

• Salt bridge

• Cathode

• Both electrodes

What are the two ways electric current is conducted in a voltaic cell?

• Ion flow in the salt bridge and electron flow in the wires

• Electron flow in the salt bridge and ion flow in the wires

• Electron flow in the electrodes and ion flow in the wires

• Ion flow in the electrodes and electron flow in the salt bridge