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Electrochemistry — Chemistry STD 12 Science — Question

Maharashtra BoardEnglish MediumSTD 12 ScienceChemistryElectrochemistry2 Marks
Question
Write the relation between molar conductivity and molar ionic conductivities for the following electrolytes:
(a) $KBr$, (b) $Na _2 SO _4$ (c) $AlCl _3$.
✓

Answer

(a) If $\wedge_0$ is molar conductivity of an electrolyte at infinite dilution and $\lambda_{+}^0$ and $\lambda_{-}^0$ are molar ionic conductivities then,
$\wedge_{ 0KBr }=\lambda_{ K +}^0+\lambda_{ Br ^{-}}^0$
(b) $\wedge_{ 0Na _2 SO _4}=2 \lambda_{ Na +}^0+\lambda_{ SO _4{ }^{2+}}^0$
(c) $\wedge_{ AlCl _3}=\lambda_{ Al _{3+}}^0+3 \lambda_{ Cl ^{-}}^0$

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