MHT CET Medical202624 April 2026Morning ShiftChemistryElectrochemistryActual
A 0.02 M KCl solution has conductivity k=2.76 10⁻³ S cm ⁻¹ . Find molar conductivity.
Options
- A130 S cm ^2 mol ⁻¹
- B138 S cm ^2 mol ⁻¹
- C148 S cm ^2 mol ⁻¹
- D150 S cm ^2 mol ⁻¹
Correct answer
B. 138 S cm ^2 mol ⁻¹
Step-by-step solution
Molar conductivity _m is given by the formula: _m = k 1000 M Given: k = 2.76 10⁻³ S cm ⁻¹ M = 0.02 M Substituting the values: _m = 2.76 10⁻³ 1000 0.02 _m = 2.76 0.02 _m = 138 S cm ^2 mol ⁻¹ Answer: 138 S cm ^2 mol ⁻¹