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Because of the mechanism of addition polymerization;
In addition polymerization the pi-bond of a molecule with a double bond (e.g. ethene) is broken by attatchment of a radical (a molecule with a lone electron) to the molecule with the double bond:
one of the two electrons that formed the double bond pairs up with the single electron from the radical so the other electron from the double bond becomes a lone electron himself; and so it continues until two radicals meet each other.
So you need to have a double bond in order to have this kind of polymerization;
(there are other kinds of polymerization of molecules whitch have a functional group but ethane nor ethene has these so it doesn't apply to them.)
Wiki User
∙ 13y ago
Wiki User
∙ 10y agowhy addition reaction take place in ethene and ethyne but not in ethane
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Ethene differs from ethane in that it has a?
double bond
What polymer is formed when lots of ethane molecules are joined together?
The plastic poly [ethene ]- polyethylene is formed.
A molecule of ethane and a molecule of ethene both have the same?
number of carbon atoms
Which of the following is most reactive A. ethane B. ethene C. ethyne D. they are all equally reactive?
Ethyne is most reactive where as ethane is least.
Punjab text book board Lahore chemistry of 10h class?
prepare ethane from ethene
How does the structure of ethene compare to the structure of ethane?
Both ethene and ethane contain two carbons. Ethene has a double bond between its two carbons while ethane has a single bond. Because of this, ethane contains six hydrogen atoms, but ethene only contains four.
Is ethane acidic?
ethene is a gas
What makes a satured hydrocarbon from an unsaturadted hydocarbon?
It is done by the process of Hydrogenation. Example:- C2H4 + H2 ---------> C2H6 Thus, ethene undergoes hydrogenation to form ethane
Ethene differs from ethane in that it has a?
double bond
What is the raw material used to obtain ethane by hydrogenation?
ethene
What chemical reactions do both ethane and ethene undergo?
Combustion.
What is mechanism of copolymers of ethylene and propylene?
This the simultaneous polymerization of ethene and propylene.
What polymer is formed when lots of ethane molecules are joined together?
The plastic poly [ethene ]- polyethylene is formed.
A molecule of ethane and a molecule of ethene both have the same?
number of carbon atoms
Which of the following is most reactive A. ethane B. ethene C. ethyne D. they are all equally reactive?
Ethyne is most reactive where as ethane is least.
What is the name of the reaction in which many ethane molecules combine together?
You think probable to polymerization.
What organic chemical reaction will make an alkane like ethane to become a double bonded 2 carbon chain?
You are trying to reduce ethane to ethene, I am guessing. That is a very hard reaction to do... probably you will have to do a free radical halogenation on ethane to form 1-chloroethane, followed by an E2 reaction with t-butoxide or some other bulky base to form ethene. Since ethane and ethene are both gases and cheaply available from petroleum cracking, this reaction really isn't worth doing.
