Which of the following is not a characteristic feature of a salt bridg...
Introduction:
A salt bridge is an important component of an electrochemical cell. It is used to maintain electrical neutrality and complete the circuit in the cell. In this question, we need to identify the characteristic feature of a salt bridge.
Explanation:
The correct answer is option D - "It does not maintain electrical neutrality of the electrolytic solutions of the half-cells." Let's understand why this statement is not a characteristic feature of a salt bridge.
Salt bridge joins the two halves of an electrochemical cell:
A salt bridge is a U-shaped tube that connects the two half-cells of an electrochemical cell. It allows the flow of ions between the two half-cells, completing the circuit. The movement of ions is essential for the cell's operation.
It completes the inner circuit:
The salt bridge completes the inner circuit of an electrochemical cell. It acts as a pathway for the flow of ions, maintaining electrical neutrality in the half-cells. Without a salt bridge, the cell would not function properly as there would be a buildup of charge in one half-cell and a depletion of charge in the other.
It is filled with a salt solution (or gel):
A salt bridge is filled with a salt solution or gel. The salt solution contains ions that can move freely between the two half-cells. This movement of ions helps to balance the charges in the half-cells, preventing an excessive buildup of charge.
It does not maintain electrical neutrality of the electrolytic solutions of the half-cells:
This statement is incorrect. A salt bridge plays a crucial role in maintaining electrical neutrality in the electrolytic solutions of the half-cells. When a redox reaction occurs in the half-cells, there is a transfer of electrons from one half-cell to another. The salt bridge allows the flow of ions to balance the charge, ensuring that the half-cells remain electrically neutral.
Conclusion:
In summary, a salt bridge is an essential component of an electrochemical cell. It joins the two halves of the cell, completes the inner circuit, and maintains electrical neutrality in the electrolytic solutions of the half-cells. Option D is not a characteristic feature of a salt bridge.
Which of the following is not a characteristic feature of a salt bridg...
A salt bridge is a junction that connects the anodic and cathodic compartments in a cell or electrolytic solution. It maintains electrical neutrality within the internal circuit, preventing the cell from rapidly running its reaction to equilibrium.