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प्रश्न
Give the method of preparation of ethyne by 1, 2-dibromoethene.
उत्तर
When 1,2-dibromoethane (ethylene dibromide) is boiled with alcoholic potassium hydroxide, ethyne is formed.
\[\ce{\underset{ethylene dibromide}{CH2Br2 - CH2Br} + \underset{alcoholic}{2KOH} ->[200^\circ C][boiling] \underset{ethyne}{CH ≡ CH} + 2KBr + 2H2O}\]
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संबंधित प्रश्न
Choose the correct answer from the options given below:
If the molecular formula of an organic compound is C10H18 it is:
1) alkene
2) alkane
3) alkyne
4) Not a hydrocarbon
Select from the list the gas that matches the description given in case
[ammonia, ethane, hydrogen chloride, hydrogen sulphide, ethyne]
This gas is used for welding purposes.
Write the structure of the following compound:
3-hexene
Give a chemical test to distinguish between ethane and ethene.
State how the following conversion can be carried out:
Ethyl chloride to Ethyl alcohol
Convert ethyne to ethane.
Write an equation for the laboratory preparation of an unsaturated hydrocarbon from calcium carbide.
Name the products formed and write an equation when ethyne is added to the following in an inert solvent:
Bromine
Name the products formed and write an equation when ethyne is added to the following in an inert solvent:
Iodine
Substitution reactions are characteristic reactions of ______.
