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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 
for all concentrations and draw a plot between 
and c½. Find the value of
.
Asked by Darshan Last Modified
Answer 
Vishaka Bhutia
Home Tutor
Given,
κ = 1.237 × 10−2 S m−1, c = 0.001 M
Then, κ = 1.237 × 10−4 S cm−1,c½ = 0.0316 M1/2
= 123.7 S cm2 mol−1
Given,
κ = 11.85 × 10−2 S m−1, c = 0.010M
Then, κ = 11.85 × 10−4 S cm−1, c½ = 0.1 M1/2
= 118.5 S cm2 mol−1
Given,
κ = 23.15 × 10−2 S m−1, c = 0.020 M
Then, κ = 23.15 × 10−4 S cm−1, c1/2 = 0.1414 M1/2
= 115.8 S cm2 mol−1
Given,
κ = 55.53 × 10−2 S m−1, c = 0.050 M
Then, κ = 55.53 × 10−4 S cm−1, c1/2 = 0.2236 M1/2
= 111.1 1 S cm2 mol−1
Given,
κ = 106.74 × 10−2 S m−1, c = 0.100 M
Then, κ = 106.74 × 10−4 S cm−1, c1/2 = 0.3162 M1/2
= 106.74 S cm2 mol−1
Now, we have the following data:
|
| 0.0316 | 0.1 | 0.1414 | 0.2236 | 0.3162 |
|
| 123.7 | 118.5 | 115.8 | 111.1 | 106.74 |
Since the line interruptsat 124.0 S cm2 mol−1, = 124.0 S cm2 mol−1.
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