The molar conduct
The plot of molar conductivity (λm) vs different C1/2 values of KCL solutions given is a straight line.
• and from the equation
λm = λ0m – A C1/2 we can see that the intercept for the straight line( where C1/2 = 0 ) is actually the limiting molar conductivity λ0m (from the concept of y=mx + c, where c=the intercept )
the value of which can be determinedfrom the graph and is = 150.00 S Cm2 mol-1
• on the other hand, the slope of the graph is the value of A which can be determined by the concept y=mx + c, where m is the slope and
m=(y – c)/x,
• by taking the molar conductivity λm =147.2 for the C1/2 = .034 from the graph,
A= - slope =
= - 82.35 S cm2 mol–1(mol/L–1)-1/2.
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