The resistances of a series of aqueous NaCl solutions, formed by successive dilution of a sample, were measured in a cell with cell constant (the constant C in the relation κ = C/R) equal to 0.2063 cm-1 and the following values were found at 25oC:   c/(mol dm−3) 0.00050 0.0010 0.0050 0.010 0.020 0.050 R/W 3314 1669 342.1 174.1 89.08 37.14   Find the molar conductance of NaCl at 25oC at infinite dilution from the graph.

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The resistances of a series of aqueous NaCl solutions, formed by successive dilution of a sample, were measured in a cell with cell constant (the constant in the relation κ = C/R) equal to 0.2063 cm-1 and the following values were found at 25oC:

 

c/(mol dm−3)

0.00050

0.0010

0.0050

0.010

0.020

0.050

R/W

3314

1669

342.1

174.1

89.08

37.14

 

Find the molar conductance of NaCl at 25oC at infinite dilution from the graph.

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