Advertisements
Advertisements
Question
Phenol can be distinguished from ethanol by the reactions with:
(i) \[\ce{Br2/water}\]
(ii) \[\ce{Na}\]
(iii) Neutral \[\ce{FeCl3}\]
(iv) All the above
Advertisements
Solution
(i) \[\ce{Br2/water}\]
(iii) Neutral \[\ce{FeCl3}\]
Explanation:
Ethanol does not give any reaction with neutral \[\ce{FeCl3}\] solution while phenol gives violet colour-neutral \[\ce{FeCl3}\]. When phenol is treated with bromine water, 2, 4, 6-tribromophenol is formed as white precipitate. Ethanol does not react with bromine water.
APPEARS IN
RELATED QUESTIONS
Write resonance structures of aniline. What is the action of benzene diazonium chloride on ethanol?
How do you convert the following:
Ethanol to Propan-2-ol
Which of the following is correct?
Wood spirit is known as acetone:
Phenol is less acidic than ______.
Write the IUPAC name of the following compound.
\[\begin{array}{cc}
\phantom{.}\ce{CH3 - CH - CH - CH - CH - CH3}\phantom{}\\
\phantom{......}|\phantom{......}|\phantom{......}|\phantom{.....}|\phantom{........}\\
\phantom{...}\ce{CH3}\phantom{...}\ce{OH}\phantom{...}\ce{C2H5}\phantom{.}\ce{OH}\phantom{...}\end{array}\]
Suggest a reagent for conversion of ethanol to ethanoic acid.
Arrange the following compounds in increasing order of acidity and give a suitable explanation.
Phenol, o-nitrophenol, o-cresol
Arrange water, ethanol and phenol in increasing order of acidity and give reason for your answer.
Match the items of column I with items of column II.
| Column I | Column II | |
| (i) | Methanol | (a) Conversion of phenol to o-hydroxysalicylic acid |
| (ii) | Kolbe’s reaction | (b) Ethyl alcohol |
| (iii) | Williamson’s synthesis | (c) Conversion of phenol to salicylaldehyde |
| (iv) | Conversion of 2° alcohol to ketone | (d) Wood spirit |
| (v) | Reimer-Tiemann reaction | (e) Heated copper at 573 K |
| (vi) | Fermentation | (f) Reaction of alkyl halide with sodium alkoxide |
Which reagent can convert acetic acid into ethanol?
Tonics in general contain
Alcoholic fermentation is brought about by the action of
If the starting material is 1-methyl-1,2-epoxy cyclopentane, of absolute configuration, decide which one compound correctly represents the product of its reaction with sodium methoxide in methanol.
How methanol is obtained from methanal.
Give IUPAC names of the following compounds:
\[\begin{array}{cc}
\ce{CH3 - CH - CH - CH - CH2-OH }\\
|\phantom{......}|\phantom{......}|\phantom{.......}\\
\ce{Cl}\phantom{....}\ce{CH3}\phantom{...}\ce{CH3}\phantom{.....}
\end{array}\]
