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Select the correct statement about salt ...

Select the correct statement about salt bridge

A

Salt bridge helps to complete the electrical circuit

B

It helps to maintain the electrical neutrality of the solution in the two half cell

C

It maintains flow of electric current

D

All of these

Text Solution

AI Generated Solution

The correct Answer is:
To solve the question regarding the correct statement about the salt bridge, we can analyze each statement provided in the options. ### Step-by-Step Solution: 1. **Understanding the Function of a Salt Bridge:** - A salt bridge is a U-shaped tube filled with a concentrated solution of an inert electrolyte. Its primary role in an electrochemical cell (like a galvanic cell) is to connect the two half-cells. 2. **Analyzing Each Statement:** - **Option 1:** "A salt bridge helps to complete the electrical circuit." - This statement is correct. The salt bridge allows the flow of ions between the two half-cells, which completes the circuit necessary for the flow of electrons from the anode to the cathode. - **Option 2:** "It helps to maintain the electrical neutrality of the solution in two half cells." - This statement is also correct. As the redox reactions occur in the half-cells, ions are consumed or produced. The salt bridge allows ions to flow in to balance the charge, thus maintaining electrical neutrality. - **Option 3:** "It maintains the flow of electric current." - This statement is correct as well. By allowing ions to move between the half-cells, the salt bridge facilitates the continuous flow of electric current in the circuit. 3. **Conclusion:** - Since all three statements (Option 1, Option 2, and Option 3) are correct, we can conclude that the correct answer is: - **Option 4:** "All of these." ### Final Answer: The correct statement about the salt bridge is **Option 4: All of these.**
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