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Question

The correct order of equivalent conductance at infinite dilution for LiCl, NaCl, and KCl would be:

A
KCl>NaCl>LiCl
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B
LiCl>NaCl>KCl
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C
LiCl>KCl>NaCl
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D
LiClNaCl>KCl
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Solution

The correct option is A KCl>NaCl>LiCl
As atomic size of the atom increases hydration energy decreases
in the order: Li+>Na+>K+.
Hydration makes the cation heavier so mobility decreases in the following order: K+>Na+>Li+
As equivalent conductance at infinite dilution is directly proportional to mobility hence the correct order is:
KCl>NaCl>LiCl


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