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  4. To distinguish between salicylic acid and phenol one can use :

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Q. To distinguish between salicylic acid and phenol one can use :

UPSEEUPSEE 2005

Solution:

$NaHCO _{3}$ reacts with $-$ COOH group to give out $CO _{2}$ while other groups do not react with it

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salicylic acid $+ NaHCO _{3} \longrightarrow $ effervescence of $CO _{2}$

Phenol $+ NaHCO _{3} \longrightarrow $ No reaction

$\therefore \, NaHCO _{3}$ is used to distinguish between phenol and salicylic acid.