Advertisements
Advertisements
प्रश्न
Answer in brief.
Give a simple chemical test to distinguish between ethanol and ethyl bromide.
Advertisements
उत्तर
i. Ethanol on reaction with a very strong base like alkali metal Na or K gives sodium or potassium ethoxide with the liberation of hydrogen gas.
\[\ce{2CH3CH2 - OH + 2Na -> 2CH3CH2O^-Na+ + H2_{(g)}↑}\]
ii. Ethyl bromide on reaction with sodium metal does not liberate hydrogen gas.
\[\ce{2CH3CH2Br + 2Na -> CH3CH2 - CH2CH3 + 2NaBr}\]
APPEARS IN
संबंधित प्रश्न
Choose the correct option.
Which is the most resistant alcohol towards oxidation reaction among the following?
Answer in one sentence/ word.
Write the name of the electrophile used in Kolbe’s Reaction.
Arrange the following in decreasing order of acid strength.
CH3OH, CH3–CH2–OH, CH3–CH(OH)–CH3, (CH3)3–C–OH
With the help of chemical equations show what happens when cumene hydroperoxide is treated with dil. acid.
What is the action of following reagents on pent-3-enal?
- H2/Ni
- LiAlH4/H3O+
What is the action of following on phenol at low temperature?
- dil. HNO3
- conc. H2SO4
- Br2/CS2
An organic compound gives hydrogen on reaction with sodium metal. It forms an aldehyde with molecular formula C2H4O on oxidation with pyridinium chlorochromate. Give the chemical equations in support of these observations.
\[\ce{C3H8O ->[KMnO4][(Oxidation)] C3H6O2}\]
The compound C3H8O is a/an ____________.
Which alcohol is difficult to oxidise?
In phenols, −OH group is attached to ___________ hybridised carbon.
Sodium metal with ethyl alcohol gives __________ gas.
Bromination of phenol, will NOT give:
Phenol is ____________.
Isobutylene on hydroboration followed by oxidation with hydrogen peroxide in presence of base yields ______.
Carbolic acid is oxidised by acidified sodium dichromate to give ______.
Phenoxide ion is more stable than phenol due to the ____________.
Which of the following reagents is used to convert phenol to benzene?
In Raschig's method for synthesis of phenol, the reactants used are ____________.
The number of moles of hydrogen gas formed when 2 moles of 2-methylpropan-2-ol reacts with aluminium is ____________.
Identify the product B in following conversion.
\[\ce{Chlorobenzene + H2O ->[Cu, 673 K][Pressure] A ->[conc. H2SO4][373 K] B}\]
Identify the product obtained when phenol is treated with bromine water?
Product (B) in this reaction is:
What is the action of nitrous acid on aniline?
Arrange O - H, C - H and N - H bonds in increasing order of their bond polarity.
Convert the following :
cumene to phenol.
What is the commercial method of preparation of phenol?
