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Is molar conductance and molar conductivity the same??...Also is specific conductance and specific conductivity the same???

Is molar conductance and molar conductivity the same??...Also is specific conductance and specific conductivity the same???

Grade:11

1 Answers

Sakshi
askIITians Faculty 652 Points
6 years ago
Molar conductivity is defined as the conducting power of all the ions produced by dissolving one mole of an electrolyte in solution. It is defined as the conductivity of an electrolyte solution divided by the molar concentration of the electrolyte, and so measures the efficiency with which a given electrolyte conducts electricity in solution. Its units are siemens per meter per molarity, or siemens meter-squared per mole. The usual symbol is a capital lambda, Λ, or Λm.
The molar conductance is defined as the conductance of all the ions produced by ionization of 1 g mole of an electrolyte when present in V mL of solution. It is denoted by .
Molar conductance μ = k ×V
where V is the volume in mL containing 1 g mole of the electrolyte. If c is the concentration of the solution in mole per litre, then
μ = k × 1000/c
It units are ohm-1cm2mol-1.


On the similar account, one can say that Conductivity (or specific conductance) of an electrolyte solution is a measure of its ability to conduct electricity. The SI unit of conductivity is siemens per meter (S/m). Thus, conductivity of a solution is defined as the conductance of 1 centi meter cube of the solution of electrolyte. So, you can call conductivity as specific conductance, but there is no such term defined as specific conductance.








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