Electrochemical Cell Concepts

The video tutorial explains the function of a salt bridge in an electrochemical cell, focusing on the oxidation of zinc and reduction of copper. It describes how the salt bridge maintains charge neutrality, enabling electron flow and voltage generation. The tutorial also covers the spontaneity of the reaction, electrode naming, and how to diagram the cell setup.

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

• To separate the anode and cathode

• To increase the voltage

• To maintain electrical neutrality

• To provide a path for electron flow

In the initial setup of the electrochemical cell, what was the voltage reading without the salt bridge?

• 1.5 volts

• 1.808 volts

• 0 volts

• 2.5 volts

During the oxidation process in the cell, what happens to zinc?

• It gains electrons

• It turns into copper

• It turns into zinc two-plus ions

• It remains unchanged

What happens to copper ions during the reduction process?

• They lose electrons

• They turn into copper metal

• They dissolve in the solution

• They remain as ions

How does the salt bridge enable electron flow in the cell?

• By providing a direct path for electrons

• By balancing charges with sodium and nitrate ions

• By increasing the concentration of ions

• By separating the anode and cathode

What is the relationship between a spontaneous reaction and voltage reading?

• Spontaneous reactions have positive voltage

• Spontaneous reactions have fluctuating voltage

• Spontaneous reactions have zero voltage

• Spontaneous reactions have negative voltage

Which electrode is associated with oxidation in an electrochemical cell?

• Cathode

• Anode

• Neither electrode

• Both electrodes

What is the role of the cathode in an electrochemical cell?

• To reduce copper ions

• To separate the anode and cathode

• To maintain electrical neutrality

• To oxidize zinc

In the cell diagram, where is the anode placed?

• On the right

• In the middle

• Above the cathode

• On the left

What direction do electrons flow in an electrochemical cell?

• They do not flow

• From cathode to anode

• From anode to cathode

• In both directions