Give two functions of salt bridge.

Explanation

### Step-by-Step Solution:

1. **Definition of Salt Bridge**:
A salt bridge is a device used in electrochemical cells to connect the two half-cells, allowing for the flow of ions and maintaining electrical neutrality.

2. **First Function of Salt Bridge**:
The primary function of the salt bridge is to connect the two half-cells of an electrochemical cell. This connection allows the flow of ions between the anode and cathode, completing the circuit necessary for the electrochemical reaction to occur.

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