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Question

The molar ionic conductances at infinite dilution of Mg2+ and Cl are 106.1 and 76.3 ohm1 ohm1 cm2 mol1 respectively. The Molar conductance of solution of MgCl2 at
infinite dilution is

A
29.8ohm1cm2mol1
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B
183.4ohm1cm2mol1
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C
285.7ohm1cm2mol1
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D
258.7ohm1cm2mol1
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Solution

The correct option is D 258.7ohm1cm2mol1
ΛMgCl2=λMg2++2λCl
=106.1+2 × 76.3 = 258.7

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