Molar conductivity

The molar conductivity of an electrolyte solution is defined as its conductivity divided by its molar concentration.[1][2]

where:

κ is the measured conductivity (formerly known as specific conductance),[3]
c is the molar concentration of the electrolyte.

The SI unit of molar conductivity is siemens metres squared per mole (S m2 mol−1).[2] However, values are often quoted in S cm2 mol−1.[4] In these last units, the value of Λm may be understood as the conductance of a volume of solution between parallel plate electrodes one centimeter apart and of sufficient area so that the solution contains exactly one mole of electrolyte.[5]

  1. ^ The best test preparation for the GRE Graduate Record Examination Chemistry Test. Published by the Research and Education Association, 2000, ISBN 0-87891-600-8. p. 149.
  2. ^ a b Atkins, P. W.; de Paula, J. (2006). Physical Chemistry (8th ed.). Oxford University Press. p. 762. ISBN 0198700725.
  3. ^ Conductivity, IUPAC Gold Book.
  4. ^ Cite error: The named reference LM was invoked but never defined (see the help page).
  5. ^ Laidler K. J. and Meiser J. H., Physical Chemistry (Benjamin/Cummings 1982) p. 256. ISBN 0-8053-5682-7.