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The molar conductivity (Lambda(m)) of KC...

The molar conductivity (`Lambda_(m)`) of KCl solutions at different concentrations at 298 K is plotted as shown in the figure below:

Determine the value of `Lambda_(m)^(@)` and A for KCl.

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On extrapolating the straight line to y-axis, it meets at `Lambda_(m) = 150 S cm^(2) mol^(-1)`
`Lambda_(m)^(@) = 150 S cm^(2) mol^(-1)`
A=- slope, Taking points (1) and (2)
`A = (-(148.2-149.1) S cm^(2) mol^(-1))/((0.02 - 0.01)(mol L^(-1))^(1//2)) = 90 S cm^(3) mol^(-1)//(mol L^(-1))^(2)`
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The molar conductivity of KCl solution at different concentrations at 298 K is given below : {:(c or M (mol L^(-1)),wedge_(m)(Scm^(2)mol^(-1))),(0.000198,148.61),(0.000309,148.29),(0.000521,147.81),(0.000989,147.09):} Show that a plot between wedge_(m) and sqrt(c) is a straight line. Determine the value of wedge_(m)^(@) and A for KCl .

Statement: For a weak electrolyte, the plot of molar conductivity (Lambda_(m)) against sqrt(C )(C is concentration in mol litre^(-1)) is nearly linear. Explanation: The molar conductivity at infinite dilution (Lambda_(m)) for an electrolyte can be considered equal to the sum of the limiting molar conductivities of the individual ions.

The molar conductance of NaCl vauies with the concentration as shown in the following table. And all values follows the equation lambda_(m)^(C)=lambda_(m)^(oo)-bsqrtC Where lambda_(m)^(C) = molar specific conductance lambda_(m)^(oo) =molar specific conductance at infinite dilution C = molar concentration {:("Molar concentration","Molar conductance of NaCl in ohm"^(-1)"cm"^(2)"mole"^(-1)),(4xx10^(-4),107),(9xx10^(-4),97),(16xx10^(-4),87):} When a certain conductivity cell (C) was filled with 25xx10^(-4)(M) NaCl solution. The resistance of the cell was found to be 1000 ohm. At Infinite dilution, conductance of CI^(-) and SO_(4)^(-2) are 80 ohm^(-1)cm^(2)"mole"^(-1) and 160 ohm^(-1)cm^(2)"mole"^(-1) respectively. What is the molar conductance of NaCl at infinite dilution?

The molar conductance of NaCl vauies with the concentration as shown in the following table. And all values follows the equation lambda_(m)^(C)=lambda_(m)^(oo)-bsqrtC Where lambda_(m)^(C) = molar specific conductance lambda_(m)^(oo) =molar specific conductance at infinite dilution C = molar concentration {:("Molar concentration","Molar conductance of NaCl in ohm"^(-1)"cm"^(2)"mole"^(-1)),(4xx10^(-4),107),(9xx10^(-4),97),(16xx10^(-4),87):} When a certain conductivity cell (C) was filled with 25xx10^(-4)(M) NaCl solution. The resistance of the cell was found to be 1000 ohm. At Infinite dilution, conductance of CI^(-) and SO_(4)^(-2) are 80 ohm^(-1)cm^(2)"mole"^(-1) and 160 ohm^(-1)cm^(2)"mole"^(-1) respectively. What is the cell constant of the conductivity cell (C) :

The molar conductance of NaCl varies with the concentration as shown in the following table and all values follows the equation. lambda_(m)^(c)=lambda_(m)^(oo)-bsqrt(C) where lambda_(m)^(c) = molar specific conductance lambda_(m)^(oo)= molar specific conductance at infinite dilution C=molar concentration When a certain conductivity cell (C) was filled with 25 xx10^(-4)(M) NaCl solution, the resistance of the cell was found to be 1000 ohm. At infinite dilution, conductance of Cl^(-) and SO_(4)^(2-) are 80ohm^(-1) cm^(2) "mole"^(-1) and 160ohm^(-1) cm^(2) "mole"^(-1) respectively. What is the molar conductance of NaCl at infinite dilution?

The molar conductance of NaCl varies with the concentration as shown in the following table and all values follows the equation. lambda_(m)^(c)=lambda_(m)^(oo)-bsqrt(C) where lambda_(m)^(c) = molar specific conductance lambda_(m)^(oo)= molar specific conductance at infinite dilution C=molar concentration When a certain conductivity cell (C) was filled with 25 xx10^(-4)(M) NaCl solution, the resistance of the cell was found to be 1000 ohm. At infinite dilution, conductance of Cl^(-) and SO_(4)^(2-) are 80ohm^(-1) cm^(2) "mole"^(-1) and 160ohm^(-1) cm^(2) "mole"^(-1) respectively. What is the cell constant of the conductivity cell (C)?

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