Calculate the limiting value of molar conductance when degree of ionisation is 2.02 and molar conductance is 4.04 Sm² mole? at 25°C. 

CONCEPT:

Limiting Molar Conductance (Λ_m^o)

• The limiting molar conductance (Λ_m^o) represents the molar conductivity when ionization is complete, i.e., at infinite dilution.
• The relationship between molar conductance (Λ_m) and limiting molar conductance (Λ_m^o) is given by:

  Λ_m = (Λ_m^o) × degree of ionization

EXPLANATION:

• From the given data:
  • Molar conductance (Λ_m) = 4.04 Sm² mol^-1
  • Degree of ionization = 2.02
• Using the formula:
  • Λ_m^o = Λ_m / degree of ionization
  • = 4.04 Sm² mol^-1 / 2.02
  • = 2 Sm² mol^-1

Therefore, the limiting molar conductance (Λ_m^o) is 2 Sm² mol^-1.