Define the term molar conductivity.

Explanation

**Step-by-Step Solution:**

1. **Understanding Conductivity**: Conductivity is a measure of a solution's ability to conduct electric current. It depends on the concentration of ions in the solution.

2. **Definition of Molar Conductivity**: Molar conductivity (Λ) is defined as the conductivity of a solution containing one mole of an electrolyte in one cubic meter (1 m³) of solution.

3. **Mathematical Expression**: Molar conductivity can be mathematically expressed as:
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