which molecules are alkenes
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Organic Chemistry/Alkenes Alkenes are molecules with carbons bonded to hydrogens which contain at least two sp 2 hybridized carbon atoms. That is, to say, at least one carbon-to-carbon double bond, where the carbon atoms, in addition to an electron pair shared in a sigma (σ) bond, share one pair of electrons in a pi (π) bond between them.aming Alkenes [edit]. Alkenes are named as if they were alkanes, but the -ane suffix is changed to -ene. If the alkene contains only one double bond and that double bond is terminal (the double bond is at one end of the molecule or another) then it is not necessary to place any number in front of the name.
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Alkynes: Molecular and Structural Formulas The alkynes comprise a series of carbon‐ and hydrogen‐based compounds that contain at least one triple bond. This group of compounds is a homologous series with the general molecular formula of C n H 2 n‐‐2 , where n equals any integer greater than one. The simplest alkyne, ethyne (also known as acetylene), has two carbon atoms and the molecular formula of C 2H 2. The structural formula for ethyne is. In longer alkyne chains, the additional carbon atoms are attached to each other by single covalent bonds.
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Naming Organic Molecules Alkynes. 1  Alkynes are names as derivativatives of alkanes with the suffix yne replacing ane. 2  The position of the triple bond is indicated by a number. 3  If the molecule has both a triple bond and a hydroxyl group, name it as an alkynol.  If the molecule has both a double bond and a triple bond, name it as an alkenyne.
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propane octane 2-pentene 4-decyne Alkanes, Alkenes & Alkynes. Alkanes, alkenes and alkynes are simple hydrocarbon chains with no functional groups. Alkanes are identified because the carbon chain has only single bonds. Common alkanes include methane (natural gas), propane (heating and cooking fuel), butane (lighter fluid) and octane (automobile fuel). Alkenes have at least one double bond and alkynes have at least one triple bond. The most common alkyne is ethyne, better known as acetylene. The generic formula for alkanes is C n H 2n+2, where n is the number identified by the prefix. Alkenes have the formula C n H 2n and alkynes use the formula C n H 2n-2.
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Difference Between Alkanes, Alkenes and Alkynes There are four classifications of hydrocarbons; saturated hydrocarbons or alkanes, unsaturated hydrocarbons or alkenes and alkynes, cycloalkanes, and aromatic hydrocarbons or arenes. Alkanes. Alkanes are saturated hydrocarbons which mean they are compounds with a single bond between the atoms.Saturated hydrocarbons are saturated with hydrogen and are the simplest. They are represented in general as CnH2n+2 in case of non-cyclic structures or straight-chain structures.They are also called paraffins.lkanes are saturated hydrocarbons which mean they are compounds with a single bond between the atoms. Saturated hydrocarbons are saturated with hydrogen and are the simplest. They are represented in general as CnH2n+2 in case of non-cyclic structures or straight-chain structures. They are also called paraffins.
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Hydrocarbon 1 Saturated hydrocarbons (alkanes) are the simplest of the hydrocarbon species. 2  They are composed entirely of single bonds and are saturated with hydrogen. 3  The general formula for saturated hydrocarbons is C n H 2n+2 (assuming non-cyclic structures). Unsaturated hydrocarbons have one or more double or triple bonds between carbon atoms. 2  Those with double bond are called alkenes. 3  Those with one double bond have the formula C n H 2n (assuming non-cyclic structures). 4  Those containing triple bonds are called alkynes, with general formula C n H 2n-2.
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- As the name implies hydrocarbons consist of only hydrogen and carbon atoms. There are thousands of possible hydrocarbon molecules. However, the simplest type are called alkanes. Alkanes have the formula CnH2n+2, where n = 1,2,3 etc.. For example for n=1 we have CH4, for n=2 we have C2H6 etc.. Naming these hydrocarbons is simple:
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- Unsaturated hydrocarbon Hydrocarbons having one or more double or triple bonds between carbon atoms are called unsaturated hydrocarbons. Alkenes are the hydrocarbons that have one, double bond between the carbon atoms. On the other hand, those that contain triple bonds are alkynes.nsaturated hydrocarbon Hydrocarbons having one or more double or triple bonds between carbon atoms are called unsaturated hydrocarbons. Alkenes are the hydrocarbons that have one, double bond between the carbon atoms. On the other hand, those that contain triple bonds are alkynes.
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- When a hydrogen is removed from a hydrocarbon, the resulting fragment is called an alkyl group. The name of the alkyl group is derived from the alkane by removing the ane and replacing with yl. An alkyl group can be represented by R in chemical structures.thane, C2H6, is an alkane and is an example of a saturated hydrocarbon. Ethene, C2H4, is an alkene and is an example of unsaturated hydrocarbon. Ethyne, C2H2, is an alkyne and is also an example of unsaturated hydrocarbon. Aromatic compounds are unsaturated hydrocarbons and contain a benzene ring.
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- Alkenes are hydrocarbons which contain carbon-carbon double bonds. Their general formula is C n H 2n for molecules with one double bond (and no rings). Alkenes are also known as olefins, after the original name for ethene, olefiant gas.
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Hydrocarbons Hydrocarbons that have a double bond between two carbon atoms are called alkenes. These are more reactive than alkanes. Electron-poor molecules react at the pi bond of alkenes. Hydrocarbons that have a triple bond between two carbon atoms are called alkynes.
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- Alkenes [alkenes: Alkenes are unsaturated hydrocarbons with a double bond between the carbon atoms. ] can be used to make polymers. Polymers are very large molecules made when many smaller molecules join together, end-to-end.
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Alkynes: Properties, Uses, Formula & Examples Alkynes are hydrocarbons, which are organic chemical compounds containing carbon (C) and hydrogen (H) atoms, and the feature that makes them recognized as alkynes is the presence of triple bonds. Chemical compounds that have triple and double bonds in their chemical structures are referred to as unsaturated.
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- Therefore, alkanes, alkenes, and alkynes are all aliphatic hydrocarbons.) These types of compounds react in different ways, so it is possible to distinguish between them using experimental tests. Physical Properties Since hydrocarbons contain only carbon and hydrogen, all hydrocarbons are nonpolar.
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Alkane In organic chemistry, an alkane, or paraffin (a historical name that also has other meanings), is a saturated hydrocarbon. Alkanes consist only of hydrogen and carbon atoms and all bonds are single bonds.Alkanes (technically, always acyclic or open-chain compounds) have the general chemical formula C n H 2n+2. For example, methane is CH 4, in which n=1 (n being the number of carbon atoms).lkanes from nonane to, for instance, hexadecane (an alkane with sixteen carbon atoms) are liquids of higher viscosity, less and less suitable for use in gasoline. They form instead the major part of diesel and aviation fuel.
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- Answers.com® is making the world better one answer at a time. Organic compounds with double bonds are classified as alkenes, and end with the suffix -ene, such as pentene or butene. Compounds with triple bonds are called alkynes, and end with -yne, such as octyne or propyne.
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- Carbon Compounds. . Saturated Hydrocarbons A Hydrocarbon is an organic compound that contains only the elements hydrogen and carbon. In a saturated hydrocarbon, all the bonds are single bonds. Alkane is another name for a saturated hydrocarbon.here are three types of unsaturated hydrocarbons alkenes, alkynes, and aromatic hydrocarbons. Alkenes Many fruit bearing plants produce ethene, which controls the rate at which fruits ripening. Alkynes Alkynes are the most reactive hydrocarbon compounds.
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- An unsaturated hydrocarbon is a hydrocarbon containing at least one double or triple bond. An alkene is a hydrocarbon containing double bonds. The general formula of an alkene is CnH2n. An alkyne is a hydrocarbon containing triple bonds. The general formula of an alkyne is CnH2n-2.The term saturated is used to refer to a compound in which all carbon-carbon bonds are single bonds and every carbon atom is connected to a different atom.A saturated hydrocarbon will contain all the hydrogen atoms possible according to the alkane general formula CnH2n+2.n alkene is a hydrocarbon containing double bonds. The general formula of an alkene is CnH2n. An alkyne is a hydrocarbon containing triple bonds. The general formula of an alkyne is CnH2n-2.
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Unsaturated Hydrocarbon: Definition & Examples Alkynes are unsaturated hydrocarbons that have one or more carbon-carbon triple bonds. When naming alkynes, the suffix 'yne' is used, which notifies us that there is a triple bond present in the compound.
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Alkenes Aliphatic hydrocarbons with one double bond between carbons are called alkenes. They follow the naming convention of the alkanes except that the suffix-ene is used instead of-ane. For alkenes above propene the position of the double bond must be specified in the name.thene is the smallest of the alkene series. More commonly called ethylene, it is an important intermediate in many chemical synthesis processes. Notably, it is used in the manufacture of ethylene glycol for antifreeze.
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- Alkenes. The products of cracking include alkenes (for example ethene and propene). The alkenes are a family of hydrocarbons that share the same general formula. This is C n H 2n. The general formula means that the number of hydrogen atoms in an alkene is double the number of carbon atoms.For example, ethene is C 2 H 4 and propene is C 3 H 6.romine water is used to tell the difference between an alkane and an alkene. An alkene will turn brown bromine water colourless as it reacts with the double bond. Bromine water remains brown in the presence of an alkane as there is no double bond. Page: 1  1. 2  2. 3  3.
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- in chemical compound: Alkynes. Molecules that contain a triple bond between two carbon atoms are known as alkynes. The triple bond is made up of one σ bond and two π bonds. As in alkenes, the π bonds constitute regions of increased electron density lying parallel to the carbon-carbon bond axis.
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Chapter 2 Molecules, Ions, and Chemical Formulas Hydrocarbons are organic compounds that contain carbon and hydrogen only. Alkanes are hydrocarbons or organic compounds made up of only carbon-carbon single bonds (as opposed to double and triple bonds). The simplest alkane is methane.
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- Alkenes. Note that the name of all alkene hydrocarbons ends in ...ene eg, ethene, propene, butene etc. All alkenes have single C H bonds, and from propane onwards, C C single bonds as well as the characteristic functional group C=C bond.A hydrocarbon, e.g. an alkene, can only consist of carbon and hydrogen atoms.lkenes. Note that the name of all alkene hydrocarbons ends in ...ene eg, ethene, propene, butene etc. All alkenes have single C H bonds, and from propane onwards, C C single bonds as well as the characteristic functional group C=C bond.