Salt Bridge

What reaction occurs at the anode?

• Ag⁺ + e^- →Ag

• Ag → Ag⁺ + e^-

• Ni²⁺ + 2e^- → Ni

• Ni → Ni²⁺ + 2e^-

Tags

NGSS.HS-PS2-5

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

• To allow the flow of electrons between electrodes

• To maintain electrical neutrality by allowing the flow of ions

• To prevent the mixing of different solutions

• To increase the voltage of the cell

Which of the following materials is commonly used to make a salt bridge?

• Copper wire

• Glass rod

• Filter paper soaked in potassium nitrate

• Plastic tube

In a galvanic cell, what would happen if the salt bridge is removed?

• The cell would continue to function normally

• The cell would stop functioning due to charge imbalance

• The voltage of the cell would increase

• The cell would explode

Which ion is typically used in a salt bridge to maintain neutrality?

How does a salt bridge prevent the solutions in the two half-cells from mixing?

• By acting as a physical barrier

• By allowing selective ion flow

• By creating a magnetic field

• By chemically reacting with the solutions

Tags

NGSS.HS-PS2-5

What would be the effect on cell potential if a salt bridge with a high resistance is used?

• Increase in cell potential

• Decrease in cell potential

• No effect on cell potential

• Cell potential becomes zero

Which of the following is NOT a function of a salt bridge?

• Completing the electrical circuit

• Maintaining charge balance

• Participating in the redox reaction

• Preventing solution mixing

Tags

NGSS.HS-PS3-5

In an experiment, a salt bridge is made using agar-agar gel. What is the role of agar-agar in this context?

• To conduct electricity

• To provide a medium for ion flow

• To react with the electrodes

• To increase the cell voltage

What is the consequence of using a salt bridge with ions that react with the electrode materials?

• Increased efficiency of the cell

• Decreased efficiency or failure of the cell

• No effect on the cell

• Improved durability of the cell