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Byju's Answer
Standard XII
Chemistry
Equivalent, Molar Conductivity and Cell Constant
The electrica...
Question
The electrical resistance of a column of 0.05 M NaOH solution of diameter 1 cm and length 50 cm is
5.55
×
10
3
ohm. Calculate its resistivity, conductivity and molar conductivity.
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Solution
A
=
π
r
2
=
3.14
×
(
0.5
)
2
=
0.785
c
m
2
,
l
=
50
c
m
R
=
ρ
l
A
ρ
=
A
R
l
=
5.55
×
10
−
3
×
0.785
50
ρ
=
87.18
Ω
c
m
Conductivity,
K
=
l
ρ
=
0.01147
S
c
m
−
1
Molar Conductivity
=
1000
×
K
C
=
0.01147
×
1000
0.05
Λ
m
=
229.4
S
c
m
2
m
o
l
−
1
Molar conductivity,
Λ
m
=
229.4
S
c
m
2
m
o
l
−
1
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2
Similar questions
Q.
The electrical resistance of a column of
0.05
M NaOH solution of diameter
1
cm and length
50
cm is
5.55
×
10
3
Ω
. Its molar conductivity will be:
Q.
Assertion :
The electrical resistance of a column of 0.05 M NaOH solution of diameter 1 cm and length 50 cm is
5.55
×
10
3
ohm.
Reason:
Its resistivity is equal to 76.234 ohm-cm.
Q.
The resistance of
0.05
M
N
a
O
H
solution is
36.1
Ω
and cell constant is
0.357
c
m
−
1
. Calculate its molar conductivity.
Q.
0.05 M NaOH solution offered a resistance of 31.6
Ω
in a conductivity cell at 298 K. If the cell constant of the cell is 0.367 cm
−
1
, calculate the molar conductivity of NaOH solution.
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