Question

The cell constant of a conductivity cell ___.

• A. Changes with change of electrolyte.
• B. Remains constant for a cell.
• C. Changes with temperature of electrolyte.
• D. Changes with change of concentration of electrolyte.

Answer 1

The correct option is B Remains constant for a cell.

Cell constant & factors affecting it

Cell constant – It is defined as the ratio of distance between the electrodes (l) and area of electrodes (A) and it is represented as $\frac{l}{A}$.

Thus the cell constant only depends on distance between electrodes & area of electrodes.

Factors not affecting cell constant

• Nature of electrolyte
• Concentration of electrolyte
• Temperature of electrolyte

Therefore, the value of the cell constant remains constant for a particular cell and does not change with change of electrolyte.

Hence, correct answer is option (D).