Give two methods of preparation s of acetylene how does it react with water and ozone explanation with reactions???
Answers
Answer:
Ethyne (acetylene) is generally prepared in a laboratory by the action of water on calcium carbide. Procedure: A thin layer of sand is spread atomic the bottom of a conical flask. A few small pieces of calcium carbide (CaC2) are placed over the sand
Answer:
Acetylene itself is formed from the reactions of the inorganic compound calcium carbide with water.
CaC2+2 H2O Ca(OH)2+HC=CH
This method was once an important industrial process for the Manufacture of acetylene. However, the method has now been replace by a process in which methane is pyrolyzed in a flow system with short contact time.
This reaction is endothermic at ordinary temperature, but is thermodynamically favorved at high temperature.
Laboratory methods of preparation of Alkynes:
Dehydrohalogenation of vic-Dihalides or gem -Dihalides
Dehalogenation of vic-Tetrahalogen compound
This reaction has the drawback that the the halogen compound is itself prepared by halogen compound is itself prepared by halogen addition to alkynes.
Explanation:
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