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.
simplest unsaturated molecule
ethene is a gas
Combustion.
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.
Ethane has two carbon atoms and six hydrogen atoms (C2H6). It is a flammable gas and is a saturated molecule, meaning that each carbon atom has four bonds linked to 4 other atoms. Methane (CH4), propane (C3H8) and butane (C4H10) are similar molecules and all are flammable gases. Ethene has two carbon atoms and four hydrogen atoms (C2H4). It is also a gas but it is an unsaturated molecule: the two carbon atoms are linked by a double bond. Ethene molecules can join together into a single, long molecule. The result is a string of carbon atoms that each have two hydrogen atoms attached and are also linked to two other carbon atoms. This is polythene or polyethelene, a simple polymer that is used for plastic bags among other things. The ability to form into long chains is due to the double bond between the carbon atoms in the ethene molecule.
-(CH2-CH2)n- a polymere structure, stereochemically drawn in the 'Related link' just below left this answer page.
ethene is a gas
double bond
ethene
Combustion.
The plastic poly [ethene ]- polyethylene is formed.
number of carbon atoms
C2H6 is the structure of ethane although the chemical formula can be shown in the displayed formula as well. This is shown by 6 C-H single bonds and 1 C-C single bond as carbon needs 4 bonds to other atoms.
Ethyne is most reactive where as ethane is least.
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.
prepare ethane from ethene
Ethene is an unsaturated compound so adds up one molecule of sulphuric acid and addition product becomes dissolved in acid but ethane is a saturated compound so does not react and dissolves in sulphuric acid.
Pyrolysis to convert the ethane to ethene. The add Alkaline Pottasium permanganate solution.