Which of the following statements about alkenes is not correct?A. They have reactive double bonds.B. They can form addition polymers.C. They react mainly by substitution.D. They can react with water to form alcohols.
Question
Which of the following statements about alkenes is not correct?A. They have reactive double bonds.B. They can form addition polymers.C. They react mainly by substitution.D. They can react with water to form alcohols.
Solution
The statement that is not correct about alkenes is C. "They react mainly by substitution." Alkenes are characterized by the presence of carbon-carbon double bonds, which are sites of high electron density. This makes them susceptible to addition reactions, not substitution reactions. In a substitution reaction, one atom or group in a molecule is replaced by another atom or group. Alkenes, however, typically undergo addition reactions where atoms or groups are added to the carbon atoms of the double bond, without any atom or group being replaced.
Similar Questions
In relation to alkenes, which of the following statements is correct? 1. They all contain double bonds. 2. They can all be reduced to alkanes. 3. Aromatic compounds are also alkenes as they contain double bonds. A. Only 1 B. Only 2 C. Only 3 D. 1 and 2 E. 2 and 3
The alkenes are unsaturated hydrocarbons. They form a homologous series, the members ofwhich have the same chemical properties.They undergo addition reactions and are easily oxidised.(a) The following hydrocarbons are isomers.CH 3 CH CH CH 2CH 3CH 3 CH 2 CH 2 CH CH 2(i) Explain why these two hydrocarbons are isomers................................................................................................................................................................................................................................................................... [2](ii) Give the structural formula of another hydrocarbon which is isomeric with the above.[1](b) Give the structural formula and name of each of the products of the following additionreactions.(i) ethene and brominestructural formula of productname of product ................................................................................................... [2](ii) propene and hydrogenstructural formula of productname of product ................................................................................................... [2](iii) but-1-ene and waterstructural formula of productname of product ................................................................................................... [2]PhysicsAndMathsTutor.com
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