Tuesday, April 14, 2020

Conductance of Electrolytic Solutions Class 12

                                   Class 12
                                  Chemistry
                            Electrochemistry👍👍

Variation of Conductivity and Molar Conductivity with Concentration
  • They depend on the concentration of the electrolyte. The Conductivity and Molar Conductivity of both weak and strong electrolytes decreases with decrease in concentration as the number of ions per unitv olume carrying the current in a solution decreases on dilution.
Fig. Variation of electrolytic conductivity
Fig. Variation of Molar conductivity 
  • Conductivity of a solution at a specific concentration = Conductance of solution placed in between the two platinum electrodes where
  • Volume of solution = 1 unit
 Cross sectional area of electrodes = 1unit
Distance = 1unit
  • Molar conductivity of a solution at a specific concentration = Conductance of solution where
Volume of solution = V
Concentration of electrolyte = 1 mole
Cross sectional area of electrodes = A
Distance = 1unit
  • When the concentration approaches to zero, the molar conductivity is referred to as limiting molar conductivity. It is represented by the symbol Ëom.





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