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ChemistryJEE Main 28 Jan 2026, Shift 2·Q23·Numerical·Easy–moderate

Electrochemistry · Kohlrausch law for strong electrolytes

For strong electrolyte Λm\Lambda_\mathrm{m} increases slowly with dilution and can be represented by the equation Λm=Λm∘−Ac1/2\Lambda_\mathrm{m} = \Lambda^\circ_\mathrm{m} - Ac^{1/2} Molar conductivity values of the solutions of strong electrolyte AB at 18∘^\circC are given below :
cc [mol L−1^{-1}]0.040.090.160.25
Λm\Lambda_\mathrm{m} [S cm2^2 mol−1^{-1}]96.195.795.394.9
The value of constant A based on the above data [in S cm2^2 mol−1^{-1}/(mol/L)1/2^{1/2}] unit is .

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