Question

The resistance of 0.1 M weak acid HA in a conductivity cell is 2 × 103 Ohm. The cell constant of the cell is 0.78 C m-1 and $\lambda_{m}^{\degree}$ of acid HA is 390 S cm2 mol-1. The pH of the solution is

• A. 3.3
• B. 4.2
• C. 5
• D. 3

Answer 1

Answer: (D)

3

Answer 2

The correct answer is (D) : 3.