Question

The conductivity of sodium chloride at 298 K has been determined at different concentrations and the results are given below: Concentration/M 0.001 0.010 0.020 0.050 0.100 102 × κ/S m−1 1.237 11.85 23.15 55.53 106.74 Calculate Am for all concentrations and draw a plot between A0m and c½. Find the value of.

Answer 1

Answer:

The plot is shown below.

The equation of plot is

$Λ </p><p>m</p><p> </p><p> =−51286C </p><p>3</p><p> +9416.C </p><p>2</p><p> −602.5C+124.1</p><p>$

When C=0 M

$Λ </p><p>m</p><p>0</p><p> </p><p> =−51286(0) </p><p>3</p><p> +9416.(0) </p><p>2</p><p> −602.5(0)+124.1</p><p></p><p>Λ </p><p>m</p><p>0</p><p> </p><p> =124.1Scm </p><p>2</p><p> /mol$

Note: For calculating Λ

m

, we have used the formula Λ m

$= </p><p>C</p><p>1000κ$