Electrophilic addition

Which of the following compounds undergoes electrophilic addition reactions most readily?

• Ethane

• Ethene

• Benzene

• Ethanol

During the electrophilic addition of bromine (Br₂) to ethene, what is the product formed?

• Ethane

• Ethanol

• 1,2-Dibromoethane

• Bromomethane

In the electrophilic addition of HBr to ethene, what is the intermediate formed?

• Carbocation

• Carbanion

• Free Radical

• Halonium ion

Which of the following statements best describes the role of the alkene in an electrophilic addition reaction?

• Nucleophile

• Electrophile

• Leaving group/Substitution

• Catalyst

In the mechanism of the electrophilic addition of HBr to propene, which of the following carbocations is more stable?

• Primary Carbocation

• Secondary Carbocation

• Tertiary Carbocation

• Methyl Carbocation

Markownikoff's rule helps to predict the major product in the addition of HX to an unsymmetrical alkene. According to this rule, the hydrogen atom attaches to the carbon:

• With the most hydrogen atoms already attached

• With the most hydrogen atoms already attached

• with the Highest electronegativity

• with the lowest electronegativity

what is an electrophile in the reaction between ethene and sulfuric acid (H₂SO₄)?

• Ethene

• H₂SO₄

• H⁺

• So₄^2-

Which reagent is used to test for the presence of a double bond (C=C) in alkenes via electrophilic addition?

• Bromine water

• Sodium hydroxide

• Silver nitrate

• Potassium permanganate

In addition of bromine to cyclohexane, the product formed is:

• Cyclohexane

• 1,2-Dibromocyclohexane

• Bromocyclohexane

• Cyclohexanol

what is the major product when HCL is added to 2-methylpropene (isobutene)?

• 1-chloro-2methylpropane

• 2-chloro-2methylpropane

• 1-chloro-2methylbutane

• 3-chloro-2-methylpropane