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Relation between ionic conductance and ionic mobility

Relation between ionic conductance and ionic mobility

Grade:12th pass

1 Answers

Arun
25750 Points
5 years ago
The ionic mobility (μ) is defined as the velocity attained by an ion moving through a gas under unit electric field.
Ionic mobility or Ionic conductance is the conductivity of a solution containing 1 g ion, at infinite dilution, when two sufficiently large electrodes are placed 1 cm apart.
Ionic mobilities ( λa or λc) ∝ speeds of ions (ua or uc)
Unit of ionic mobility is Ohm–1 cm2 or V–1S-1cm2
Ionic mobility and transport number are related as, 
λa or λc = ta or tc × λ ∞
Absolute ionic mobilityis the mobility with which the ion moves under unit potential gradient. It's unit is cm sec–1.
Absolute ionic mobility = Ionic mobility/96,500
 

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