Which of the following is NOT a function of salt bridge?
Which of the following is NOT a function of salt bridge?
Provide electrical contact
Convert electrical energy to chemical energy
Maintain electrical neutrality
Prevent mixing of solutions
Solution
A salt bridge in an electrochemical cell serves the following purposes:
Provide electrical contact: It completes the circuit by allowing ion flow, enabling the cell to function.
Maintain electrical neutrality: The salt bridge prevents charge buildup by allowing the migration of ions, ensuring the solutions in both half-cells remain neutral.
Prevent mixing of solutions: By physically separating the two half-cells, it minimizes direct mixing of their solutions, which could disrupt the reaction.
However:
Conversion of electrical energy to chemical energy is not a function of the salt bridge. This process is the reverse of what typically occurs in an electrochemical cell (chemical energy is converted to electrical energy).
Final Answer: (2) Convert electrical energy to chemical energy