Alkynes include the class of organic compounds when at least one or more carbon-carbon triple bond is present. In this case, “yne” is added to the name of the parent chain.
Another class of compounds called “alcohols” is formed when one or more hydrogen atoms are replaced by the hydroxyl group (OH -), we get an alcohol. While naming, “ol” is added to the chain name.
Industrial method : It is prepared by the hydrolysis of calcium carbide
CaC+2+ 2 H2O `->` H - C C - H + Ca(OH)2
Laboratory methods of preparation
1. Dehydrohalogenation : Acetylene is obtained when 1 , 2 or 1 , 1- dihaloethane is treated with alcoholic KOH .
2. Dehalogenation of 1 , 1 , 2 , 2 - tetrahaloethane : 1 , 1 , 2 , 2 - tetrabromoethane on heating with Zn dust gives acetylene .
3. From haloform : Acetylene is obtained by heating iodoform , CHI3 with silver powder .
CHI3 + 6 Ag + I3HC H - C C - H + 6 AgI
4. Kolbe's electrolysis : Acetylene is prepared by the electrolysis of a concentrated aqueous solution of potassium maleate or fumarate .
Homework Assignment Help is World No 1 Online Assignment Help Company
@2010 - Copyright © All rights reserved | This is made with by Homework Assignment Help self
In case you face any problem or have any query please email us at :- info[@]homeworkassignmenthelp.com
Submit us an Assignment:
For Demo Class Click hereRead more
Our tutors start working only after the payment is made, to ensure that we are doing work only for serious clients and also our solution meets the required standard.
Getting homework help was never so easy you just need to follow following steps:
(for example: EST, Australian GMT etc)
any example or format you want the solutions to be in.
send you the price quoted by our tutor along with the time needed to solve the assignment
In case you face any problem or have any query please email us at :- info[@]homeworkassignmenthelp.com