The electrical conductivity of an electrolyte in solution is quantified by molar conductivity, symbolized as Λm. This property indicates the electrolyte's efficiency in conducting electricity and is influenced by its concentration. Generally, molar conductivity rises as concentration falls, attributed to decreased ion association.
A crucial aspect is limiting molar conductivity (Λmº), which describes the electrolyte's behavior at infinite dilution (i.e., as concentration approaches zero). This value represents the molar conductivity of an electrolyte solution under conditions of infinite dilution, where interionic interactions are negligible.
Therefore, the term for the concentration of electrolyte approaching zero is: Limiting molar conductivity.
The freezing point depression constant (\( K_f \)) for water is \( 1.86 \, {°C·kg/mol} \). If 0.5 moles of a non-volatile solute is dissolved in 1 kg of water, calculate the freezing point depression.