Why does the conductivity of a solution decreases with dilution ?

Explanation

### Step-by-Step Solution:

1. **Understanding Conductivity**: Conductivity of a solution refers to its ability to conduct electric current, which is primarily due to the presence of ions in the solution. The more ions present, the higher the conductivity.

2. **Effect of Dilution**: When a solution is diluted, the volume of the solution increases. This is done by adding more solvent (usually water) to the solution.

3. **Constant Number of Ions**: During dilution, the total number of ions in the solution remains the same. For instance, if you have a certain number of ions in a concentrated solution and then add water, the ions do not disappear; they are simply spread out over a larger volume.

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