Equivalent, Molar Conductivity and Cell Constant
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In infinite dilutions, the molar conductances of Ba2+ and Cl- are 127 and
76 
. The equivalent conductivity of 
at infinite
dilution is
[CBSE 2000]
101.5
139.5
203.5
279.5
Molar conductances of BaCl2, H2SO4 and HCl at infinite dilutions are x1, x2 and x3 respectively. Equivalent conductance of BaSO4 at infinite dilution will be :
(x1+x2−x3)2
x1+x2−2x3
(x1+x2−2x3)2
(x1−x2−x3)2
Specific conductance of 0.1 MCH3COOH at 25∘ is 3.9×10−4ohm−1cm−1. If λ∞(H3O+) and λ∞(VH3COO−) at 25∘C are 349.0 and 41.0 ohm−1cm2mol−1 respectively, degree of ionization of CH3COOH at the given concentration is :
2.0%
4.0%
5.0%
1.0%
- al
- la
- ρla
- a2l
The electrical resistance of a column of 0.05 M NaOH solution of diameter 1 cm and length 50 cm is 5.55×103 ohm. Calculate its resistivity, conductivity, and molar conductivity.
- 87.135×10−2ohm m, 1.148 Sm−1, 229.6×10−4S m2 mol−1
- 87.135×10−2ohm m, 1.296 Sm−1, 229.6×10−4S m2 mol−1
- 67.135×10−2ohm m, 1.489 Sm−1, 229.6×10−4S m2 mol−1
- 77.135×10−2ohm m, 1.148 Sm−1, 229.6×10−4S m2 mol−1
- The conductance decreases upon dilution.
- The molar conductance increases, while equivalent conductance decreases upon dilution.
- The conductivity increases upon dilution.
- The molar conductance decreases, but equivalent conductance increases upon dilution.
The resistance of 1N solution of acetic acid is 250ohm. when measured in a cell of cell constant 1.15 cm−1. The equivalent conductance of 1N acetic acid (in ohm−1 cm2 eqv−1) is:
- 18.4
- 0.023
- 9.2
- 4.6
