electrolytic conductivity is siemens per metre (Sm-1) or S cm-1. concentration, Now, the dissociation constant k for weak electrolyte is It is similar to the case of metallic conductors, where free electrons favour the conduction of electricity. λ –o = Molar conductivity of an anion, For CBSE Previous Year Question Papers Class 10, CBSE Previous Year Question Papers Class 12, NCERT Solutions Class 11 Business Studies, NCERT Solutions Class 12 Business Studies, NCERT Solutions Class 12 Accountancy Part 1, NCERT Solutions Class 12 Accountancy Part 2, NCERT Solutions For Class 6 Social Science, NCERT Solutions for Class 7 Social Science, NCERT Solutions for Class 8 Social Science, NCERT Solutions For Class 9 Social Science, NCERT Solutions For Class 9 Maths Chapter 1, NCERT Solutions For Class 9 Maths Chapter 2, NCERT Solutions For Class 9 Maths Chapter 3, NCERT Solutions For Class 9 Maths Chapter 4, NCERT Solutions For Class 9 Maths Chapter 5, NCERT Solutions For Class 9 Maths Chapter 6, NCERT Solutions For Class 9 Maths Chapter 7, NCERT Solutions For Class 9 Maths Chapter 8, NCERT Solutions For Class 9 Maths Chapter 9, NCERT Solutions For Class 9 Maths Chapter 10, NCERT Solutions For Class 9 Maths Chapter 11, NCERT Solutions For Class 9 Maths Chapter 12, NCERT Solutions For Class 9 Maths Chapter 13, NCERT Solutions For Class 9 Maths Chapter 14, NCERT Solutions For Class 9 Maths Chapter 15, NCERT Solutions for Class 9 Science Chapter 1, NCERT Solutions for Class 9 Science Chapter 2, NCERT Solutions for Class 9 Science Chapter 3, NCERT Solutions for Class 9 Science Chapter 4, NCERT Solutions for Class 9 Science Chapter 5, NCERT Solutions for Class 9 Science Chapter 6, NCERT Solutions for Class 9 Science Chapter 7, NCERT Solutions for Class 9 Science Chapter 8, NCERT Solutions for Class 9 Science Chapter 9, NCERT Solutions for Class 9 Science Chapter 10, NCERT Solutions for Class 9 Science Chapter 12, NCERT Solutions for Class 9 Science Chapter 11, NCERT Solutions for Class 9 Science Chapter 13, NCERT Solutions for Class 9 Science Chapter 14, NCERT Solutions for Class 9 Science Chapter 15, NCERT Solutions for Class 10 Social Science, NCERT Solutions for Class 10 Maths Chapter 1, NCERT Solutions for Class 10 Maths Chapter 2, NCERT Solutions for Class 10 Maths Chapter 3, NCERT Solutions for Class 10 Maths Chapter 4, NCERT Solutions for Class 10 Maths Chapter 5, NCERT Solutions for Class 10 Maths Chapter 6, NCERT Solutions for Class 10 Maths Chapter 7, NCERT Solutions for Class 10 Maths Chapter 8, NCERT Solutions for Class 10 Maths Chapter 9, NCERT Solutions for Class 10 Maths Chapter 10, NCERT Solutions for Class 10 Maths Chapter 11, NCERT Solutions for Class 10 Maths Chapter 12, NCERT Solutions for Class 10 Maths Chapter 13, NCERT Solutions for Class 10 Maths Chapter 14, NCERT Solutions for Class 10 Maths Chapter 15, NCERT Solutions for Class 10 Science Chapter 1, NCERT Solutions for Class 10 Science Chapter 2, NCERT Solutions for Class 10 Science Chapter 3, NCERT Solutions for Class 10 Science Chapter 4, NCERT Solutions for Class 10 Science Chapter 5, NCERT Solutions for Class 10 Science Chapter 6, NCERT Solutions for Class 10 Science Chapter 7, NCERT Solutions for Class 10 Science Chapter 8, NCERT Solutions for Class 10 Science Chapter 9, NCERT Solutions for Class 10 Science Chapter 10, NCERT Solutions for Class 10 Science Chapter 11, NCERT Solutions for Class 10 Science Chapter 12, NCERT Solutions for Class 10 Science Chapter 13, NCERT Solutions for Class 10 Science Chapter 14, NCERT Solutions for Class 10 Science Chapter 15, NCERT Solutions for Class 10 Science Chapter 16, Important Questions For Class 11 Chemistry, Important Questions For Class 12 Chemistry, CBSE Previous Year Question Papers Class 10 Science, CBSE Previous Year Question Papers Class 12 Physics, CBSE Previous Year Question Papers Class 12 Chemistry, CBSE Previous Year Question Papers Class 12 Biology, ICSE Previous Year Question Papers Class 10 Physics, ICSE Previous Year Question Papers Class 10 Chemistry, ICSE Previous Year Question Papers Class 10 Maths, ISC Previous Year Question Papers Class 12 Physics, ISC Previous Year Question Papers Class 12 Chemistry, ISC Previous Year Question Papers Class 12 Biology. The salts need not be always ionic in nature. The molar conductivity of an electrolyte solution is defined as its conductivity divided by its molar concentration. cations is as Li+(aq) < Na+(aq) < Molar conductance of a weak electrolyte depends upon its degree of dissociation. The SI unit of molar conductivity is Siemens metre-squared per mole (S m 2 mol −1). As a result, molar conductivity increases with dilution. Ex 2) Molar conductivity of NH4OH can also be calculated by Kohlrausch law- Λ + NH4OH = Λ 0 NH4 + + Λ 0 OH – ———-eq 1 The above eq. But once dissolved, the ions dissociate from their bound form. C = concentration in mole per liter. }(document, 'script', 'facebook-jssdk')); Find the solubility of MnS in neutral water in gm/l .Ksp of MnS = 2.6 x 10-14, Rank the following atoms and molecules based on which would effuse the fastest. Calculate its molar conductivity if ∧ C H 3 C O O H ∞ is 3 9 0. 2. 3. can be obtained by the knowing the molar conductivities at infinite dilution for strong electrolyte NH4Cl, NaOH , NaCl. Both specific conductance or conductivity and molar conductivity change with concentration of the electrolyte. Due to this, specific conductivity is not a suitable quantity to compare the conductance of different electrolytic solutions. Equivalent conductivity also increases with dilution because of increase in volume containing one gram equivalent of the electrolyte. Thus, by determining the specific conductance (κ) and molar conductivity of such solutions, we can easily calculate solubility as: Example: The specific conductance of a saturated solution of AgCl at 298 K is found to be 1.386 × 10-6 S cm2 mol-1 . On dilution, the dissociation increases, causing the current-carrying ions to increase in the solution. conductivity of both strong and weak electrolytes increases with dilution i.e. The values obtained for an ionic radius in solution calculated this way can be quite different from the ionic radius for the same ion in crystals, due to the effect of hydration in solution. Difference between conductivity and specific conductivity. Required fields are marked *, Variation of Conductivity and Molar Conductivity, The molar conductance of strong (HCl, KCl, KNO, In strong electrolytes, molar conductivity increases slowly with dilution and there is a tendency for molar conductivity to approach a certain limiting value when the concentration approaches zero i.e., when the dilution is infinite. The conductivity or specific conductivity is the measure of the ability of an electrolytic solution to conduct electricity. The only criteria are that the compound should be composed of oppositely charged ions. Molar conductivity of the KCl solution is 124‬ cm² mol⁻¹. As a result molar conductivity increases with dilution. Constant (Theory of Weak Electrolyte) : Where α = degree of dissociation Variation of molar conductivity with concentration is different for strong and weak electrolytes. conductivity of an electrolyte is defined as the electrolytic conductivity Required fields are marked *. The positively charged one is called the cation and the negatively charged one is called an anion. Molar conductivity is the conductance property of a solution containing one mole of the electrolyte or it is a function of the ionic strength of a solution or the concentration of salt.