Molar conductivity values of the solutions of strong electrolyte AB at 18°C are given below : c 0.04 0.09 0.16 0.25 96.1 95.7 95.3 94.9 The value of constant A based on the above data in unit is__

Question

For strong electrolyte $Λ_{m}$ increases slowly with dilution and can be represented by the equation

$Λ_{m} = Λ_{m} ° - A c^{1 / 2}$

Molar conductivity values of the solutions of strong electrolyte AB at 18°C are given below :

c ${[mol L}^{- 1}]$	0.04	0.09	0.16	0.25
$Λ ₘ ({S cm}^{2} {mol}^{- 1})$	96.1	95.7	95.3	94.9

The value of constant A based on the above data in $[S {cm}^{2} {mol}^{- 1} / {(mol / L)}^{1 / 2}]$ unit is_______. [2026]

Smart Achievers · Accepted Answer

(4)

$Using equation: Λ_{m} = Λ_{m}^{0} - A \sqrt{c}$

$96.1 = Λ_{m}^{0} - A \sqrt{0.04}$

$96.1 = Λ_{m}^{0} - A \times 0.2 . . . . (1)$

$95.7 = Λ_{m}^{0} - A \sqrt{0.09}$

$95.7 = Λ_{m}^{0} - A \times 0.3 . . . (2)$

$From eq. (1) and eq. (2)$

$A = 4$

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