Calculate the Limiting Molar Conductivity of an Aqueous Solution of Sodium

Multiple Choice

Calculate the limiting molar conductivity of an aqueous solution of sodium phosphate, Na₃PO₄, given that the ionic conductivities of the sodium, Na⁺, and phosphate, PO₄^3-, ions are 5.01 and 24.0 mS m² mol^-1 respectively.

A) 29.0 mS m² mol^-1
B) 77.0 mS m² mol^-1
C) 39.0 mS m² mol^-1
D) 19.0 mS m² mol^-1