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  4. HClO4,HNO3 and HCl are all strong acids in aqueous solution. In glacial acetic acid medium, their acid strength is such that

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Q. $HClO_{4},HNO_{3}$ and HCl are all strong acids in aqueous solution. In glacial acetic acid medium, their acid strength is such that

NTA AbhyasNTA Abhyas 2020Organic Chemistry – Some Basic Principles and Techniques

Solution:

In order to compare relative acid strength of strong acids like $HClO_{4},HNO_{3}$ and HCl, we use glacial acetic as differentiating solvent.

Conductometric measurements on their solutions in glacial acetic acid show that the strength of following mineral acids decreases in order

$HClO_{4}>HCl>HNO_{3}$