Question

when a conductivity cell was filled with n / 50 KCL solution the resistance was found to be 200 ohm the same cell filled with the solution of NaOH containing 2gm NaOh/l then resistance was found to be 80 ohm what is equivalent conductivity of n a o h​

Answer 1

Answer:

232.2

Explanation:The relationship between conductivity κ, resistance R and the cell constant b is

κ=

R

1

​

×b

κ=

31.6Ω

1

​

×0.367/cm

κ=0.0116S/cm

The relationship between molar conductivity Λ

m

​

, conductivity κ and molar concentration C is

Λ

m

​

=

C

1000κ

​

Λ

m

​

=

0.05m

1000×0.0116S/cm

​

Λ

m

​

=232.3Scm

2

/mol

Hence, the molar conductivity is 232.3Scm

2

/mol