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Why is the reaction of ethene with bromine called an addition reaction?

Ethene and bromine are an addition reaction because ethene is an alkene – it has a double bond. It is easier for new atoms to open the double bond and react there than to remove the hydrogen already attached, and then bond to it, which would be a substitution reaction.

What elements are present in alkanes quizlet?

Terms in this set (31) are structurally simple organic compounds made up solely of carbon and hydrogen. indicates that alkanes are made up entirely of hydrogen and carbon. indicates that these compounds contain only single bonds.

What elements are present in alkanes?

What elements are present in alkanes? – The elements that are present in alkanes are hydrogen and carbon.

Which type of hydrocarbons will not react with bromine quizlet?

aromatic compounds (benzene rings) are not reactive with bromine.

Which type of hydrocarbons will not react with bromine?

Under standard laboratory conditions, ethane will not react with bromine water. In the presence of UV light, ethane will react with bromine in a substitution reaction.

Which type of hydrocarbons will not react with bromine chegg?

Alkanes do not react with bromine in solution. Therefore, if the addition of bromine does not change the color of the solution from red to clear, it is likely that alkanes are present.

Which hydrocarbon reacts immediately with the bromine solution?

Unsaturated hydrocarbons react rapidly with bromine in a solution of carbon tetrachloride or cyclohexane. The reaction is the addition of the elements of bromine to the carbons of the multiple bonds. The bromine solution is red; the product that has the bromine atoms attached to carbon is colorless.

Which role the double bond plays in the electrophilic addition reaction mechanism?

Alkenes are more reactive than alkanes; hence, they usually undergo addition reactions in which the pi bond is broken and two new groups are added across the double bond to give a saturated compound. The electrophile attacks the double bond forming a carbocation intermediate.

Are hydrocarbons flammable?

Hydrocarbons are highly flammable.

Are hydrocarbons are good or bad for the environment?

On their own, hydrocarbons pose no risk. However, when exposed to sunlight and/or nitrogen oxides, they undergo a chemical reaction. Hydrocarbons are the main component of crude oil, natural gases, and most pesticides. All of these substances contribute to the greenhouse effect, and the depletion of the ozone layer.

What is the relation between halogenated hydrocarbon and liver?

Background and Aims: Intoxications by aliphatic halogenated hydrocarbons (AHH), used as effective solvents, are rare and may cause life-threatening liver injury. Patients with acute intoxications by AHH received an innovative treatment.

What uses do halogenated hydrocarbons have?

What are some common uses of halogenated hydrocarbons? Halogenated hydrocarbons have a wide variety of uses. Tetrachloroethylene, also known as perchloroethylene or “perc,” has been traditionally used as a solvent for dry cleaning clothes. Several chlorinated hydrocarbons have been used as insecticides and herbicides.

What are halogenated organic compounds?

Halogenated organic compounds are substances that contain carbon and hydrogen, but where one or more hydrogen atoms have been replaced by a halogen – chlorine, bromine, fluorine or iodine.

What does halogenated mean?

A halogenated compound is one onto which a halogen (e.g., fluorine, chlorine, bromine, or iodine) has been attached. In addition, the more halogenated the compound (i.e., the more halogens attached to it), the more resistant it is to biodegradation.

What are halocarbon refrigerants?

At normal temperature and pressure, halocarbon refrigerants are gases or highly volatile liquids. Halocarbons may be divided into four groups: 1) Chlorofluorocarbons (CFC) R11, R12. 2) Hydrochlorofluorocarbons (HCFC)

What causes halocarbons?

A large amount of the naturally occurring halocarbons are created by wood fire, dioxine for example, or volcanic activities. A second large source are marine algae which produce several chlorinated methane and ethane containing compounds.

Are CFCs halocarbons?

Chlorofluorocarbons (CFCs) are nontoxic, nonflammable chemicals containing atoms of carbon, chlorine, and fluorine. CFCs are classified as halocarbons, a class of compounds that contain atoms of carbon and halogen atoms.

Do halocarbons contain oxygen?

Dioxins. Polychlorinated dibenzodioxins (PCDDs) and dibenzofurans (PCDFs) are two groups of chemically similar structured chlorinated organic compounds, belonging to the group of oxygen-containing derivatives of halocarbons, which are colloquially called dioxins.