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Explain about the variation of molar conductivity with concentration by Kohlraush studies? |
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Answer» Solution :Kohlraush OBSERVED that, INCREASE of molar conductance of an electrolytic solution with the increase in dilution. He deduced the following EMPIRICAL relationship betwee the molar conductance `(Lambda_m)` and concentration of the electrolyte (c ) `Lambda_m = Lambda_m^@ - ksqrt(c )` For strong ELECTROLYTES such as `KCl, NaCl` the plot `Lambda_m V_s sqrt(c )`, gives a straight line. It is ALSO observed that the plot is not a linear one for weak electrolyte. 
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