Define conductivity and molar conductivity for the solution of an electrolyte. Discuss their variation with concentration.

Explanation

### Step-by-Step Solution:

1. **Definition of Conductivity:**
- Conductivity (k) is defined as the ability of a solution to conduct electric current. It is specifically the conductance of ions produced by 1 gram equivalent of an electrolyte in a volume V (in cm³) of solution. The conditions for this definition include:
- The distance between the electrodes is 1 cm.
- The area of the electrodes is sufficiently large to ensure that the entire solution is contained between them.

2. **Mathematical Representation of Conductivity:**
...