Question
Chemistry Question on Electrochemistry
The conductivity of centimolar solution of KCI at 25°C is 0.0210 ohm-1cm-1 and the resistance of the cell containing the solution at 25°C is 60 ohm. The value of the cell constant is :
A
3.28 cm-1
B
1.26 cm-1
C
3.34 cm-1
D
1.34 cm-1
Answer
1.26 cm-1
Explanation
Solution
The cell constant l = k x R
Given: k (conductivity) = 0.0210 ohm-1cm-1
R (resistance) = 60 ohms
Then -
l = 0.0210 ohm-1cm-1 x 60 ohms
I = 1.26 cm-1
The correct option is (B): 1.26 cm-1