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Could you distinguish between alkene and alkyne?

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Question ajoutée par Mohamed M. Amen , Lecture Assistant , Kirkuk university / collage of science
Date de publication: 2015/06/07
عمر خليفة محمد حسب الله المفنخاب
par عمر خليفة محمد حسب الله المفنخاب , أستاذ كيمياء , المدارس الخاصة

as simple as that the general formula of alkene is CnH2n and for alkyne is CnH2n-2

for example :  C4H8                   C4H6

and both of them have unsaturated bond double bond and triple bond respectively.  and this as theoretical not practical 

CECIL CORLONCITO
par CECIL CORLONCITO , Managing Director , Aquagem Environment Pty Ltd

Distinguish in formula: Alkene is2 CC bond while Alkyne is3 CC bond. 

Inam Ullah
par Inam Ullah , pharmacist , Al Noorain Pharmacy

Alekenes and alkynes both are hydrocarbon and the different is,alkenes have less hydrogen aton to make a bond and alkynes have sufficient hydrogen atom

Mohamed Khedr
par Mohamed Khedr , Researcher , Helmholtz Center Munich

Alkenes have at least one double bond, while alkyenes have at least one triple bond.

Utilisateur supprimé
par Utilisateur supprimé

Alkenes have a general formula of CnH2n. While Alkynes have a general formula of CnH2n-2

 

Asif Ahmad
par Asif Ahmad , Professor , PMAS-Arid Agriculture University

Hydrocarbons having double bonds are known as Alkenes while hydrocarbons having triple bonds is refereed as Alkyne.

Mohamed Abdelghani FERROUKHI
par Mohamed Abdelghani FERROUKHI , متدرب , المعهد الوطني المتخصص في التكوين المهني بالمدية CFPA.

alkene : CnH2n+2 alkyne : Cn2n+1

Heba M Kamel
par Heba M Kamel , Quality assurance , MEC

By IR Spectroscopy :

alkene is unsaturated hydrocarbon has one or more douple bonds between its carbon atoms

its empirical formula CnH2n

c=c appears as a weak or medium intensity stretches around 1600_ 1700 cm–1 in IR spectrum and to be sure look for =C-H bond stretches around 3080 cm–1

Alkyne is unsaturated hydrocarbon also, but has one or more triple bonds between its carbon atoms

its empirical formula CnH2n-2

Carbon carbon triple bond apears as aband around 2100 cm–1

and the terminal alkyne ( C-H bond at the end of a chain where the carbon forms part of the triple bond) stretches around 3300cm–1

 

Touseef -Ur-Rehman
par Touseef -Ur-Rehman , Executive officer , SGS

Alkenes are the hydrocarbons with double covelant bond like C2H4, while alkynes are hydrocarbons having triple covelant bond e.g C2H2. Alkynes are highly unsaturated hydrocarbons.

Alkene is a hydrocarbon chain with a t least 1 double bond between 2 carbons while alkyne is the same but triple bond instead of double

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