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प्रश्न
Give simple chemical tests to distinguish between the following pairs of compounds: Benzoic acid and Phenol
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उत्तर १
(ii) Distinguish test between Benzoic acid and Phenol:
NaHCO3 Test: When Benzoic acid reacts with NaHCO3, brisk effervescence of CO2 gas evolved.
Phenol does not give this test.
C6H5OH + NaHCO3 → No Reaction.
उत्तर २
Benzoic acid and Phenol : Benzoic acid and phenol can be distinguish by FeCl3 tests. Both reacts with FeCl3 to give different colours. Phenol reacts with FeCl3 to give violet coloured precipitate while benzoic acid give buff coloured precipitate.
उत्तर ३
When treated with sodium bicarbonate, benzoic acid gives brisk effervescence due to evolution of carbon dioxide gas. No reaction takes place when phenol is treated with NaHCO3.
C6H5COOH + NaHCO3 → C6H5COONa + H2O + CO2
APPEARS IN
संबंधित प्रश्न
Write the reaction involved in the following:
Friedal-Crafts Alkylation of Phenol
On distilling phenol with Zn dust, one gets:
When Phenol is distilled with zinc dust, it gives:
Which of the following species can act as the strongest base?
Phenol does not undergo nucleophilic substitution reaction easily due to ______.
Which of the following are used to convert \[\ce{RCHO}\] into \[\ce{RCH2OH}\]?
(i) \[\ce{H2/Pd}\]
(ii) \[\ce{LiAlH4}\]
(iii) \[\ce{NaBH4}\]
(iv) Reaction with \[\ce{RMgX}\] followed by hydrolysis
Which of the following are benzylic alcohols?
(i) \[\ce{C6H5 - CH2 - CH2OH}\]
(ii) \[\ce{C6H5 - CH2OH}\]
(iii) \[\begin{array}{cc}
\ce{C6H5 - CH - OH}\\
\phantom{}|\phantom{.}\\
\phantom{..}\ce{CH3}\phantom{}
\end{array}\]
(iv) \[\begin{array}{cc}
\ce{C6H5 - CH2 - CH - OH}\\
\phantom{.......}|\phantom{}\\
\phantom{.........}\ce{CH3}\phantom{}
\end{array}\]
Out of o-nitrophenol and p-nitrophenol, which is more volatile? Explain.
Write the chemical equation involved in the following reactions:
Acetylation of salicylic add
