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Q. Among the following compounds, the strongest acid is

Organic Chemistry – Some Basic Principles and Techniques

Solution:

The correct order of acidic strength is

$CH _{3} OH > CH \equiv CH > C _{6} H _{6}> C _{2} H _{6}$

$CH _{3} OH$ is most acidic because $O$ is more electronegative than $C$ and it can accommodate negative charge as $CH _{3} O ^{-}$. All the give compounds are neutral towards litmus.