Q. 53

Match the items of Column I and Column II.


Answer :

(i) K (d)


(ii) Λm (c)


(iii) ɑ (b)


(iv) Q (a) I × t


(i) We know, Resistance (R) = ρ =


Or, R κ = = G*


Or, κ=


Where, ρ = Resistivity or specific resistance =


L= Distance between the electrodes = length


A= Area of cross section of the electrode


G*= = Cell constant


(ii) Molar conductivity, Λm is defined as the conductivity of electrolyte divided by the molar concentration of the electrolyte.


Mathematically,


Λm =


Where, κ= Conductivity of the solution


C= Concentration


(iii) Degree of dissociation, α is defined as the ratio of the molar conductivity at any concentration to the limiting molar conductivity of an electrolyte.


Mathematically,


α =


(iv) Electric charge, Q is defined as the product of the electrical current passed and the duration.


Mathematically, Q = I x T


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