Define Equivalent conductivity.

Answer

**Step-by-Step Text Solution:**

1. **Definition of Equivalent Conductivity**: Equivalent conductivity is defined as the conducting power of all the ions in a solution when 1 gram equivalent of an electrolyte is dissolved in it.

2. **Understanding Conducting Power**: The conducting power refers to the ability of ions to conduct electricity in a solution. When an electrolyte dissolves, it dissociates into its constituent ions, which are responsible for conducting electrical current.

3. **Relation to Specific Conductivity**: Equivalent conductivity is related to specific conductivity (also known as conductivity) of the solution. Specific conductivity measures how well a solution can conduct electricity, while equivalent conductivity takes into account the amount of electrolyte present.

4. **Mathematical Representation**: Equivalent conductivity (Λ) can be mathematically expressed as:
\[ \Lambda = \frac{\kappa}{C} \]
where \( \kappa \) is the specific conductivity of the solution and \( C \) is the concentration of the electrolyte in gram equivalents per liter.

5. **Units of Equivalent Conductivity**: The unit of equivalent conductivity is typically expressed in S m²/mol (Siemens meter squared per mole) or S cm²/eq (Siemens centimeter squared per equivalent).

6. **Importance in Electrochemistry**: Equivalent conductivity is an important parameter in electrochemistry as it helps in understanding the behavior of electrolytes in solution, their dissociation, and their ability to conduct electricity.