DEFINITION of 'Hedge'. Making an investment to reduce the risk of adverse price movements in an asset. Normally, a hedge consists of taking an offsetting position in a related security, such as a futures contract.aking an investment to reduce the risk of adverse price movements in an asset. Normally, a hedge consists of taking an offsetting position in a related security, such as a futures contract.
Ethene, C2H4, is an example of an unsaturated hydrocarbon. Other examples of unsaturated compounds are benzene, C6H6, and acetic acid, C2H4O2. All bond angles about the carbon-carbon double bond are 120o. All atoms bonded to the double bonded carbon atoms lie in the same plane.n 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.
Types of hydrocarbons. A hydrocarbon can exist as a gas (propane or methane), liquid (benzene or hexane), waxes or low melting solids (like naphthalene) or polymers (like polyethylene). There are four types of hydrocarbons namely saturated hydrocarbons, unsaturated hydrocarbons, cycloalkanes and aromatic hydrocarbons.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.