IB Chemistry Organic

How many alcohols have the general formula C₄H₁₀O?

• 3

• 4

• 5

• 6

What is the general formula of the alkyne series?

• C_nH_n

• C_nH_2n-2

• C_nH_2n

• C_nH_2n+2

What is the mechanism of the reaction between ethane and chlorine in sunlight?

• Free radical substitution

• Free radical addition

• Electrophilic substitution

• Electrophilic addition

Which is propyl propanoate?

• CH₃CH₂CH₂OOCCH₂CH₃

• CH₃CH₂CH₂COOCH₂CH₃

• CH₃CH₂CH₂COCH₂CH₃

• CH₃CH₂CH₂OCH₂CH₂CH₃

Which are consecutive members of a homologous series?

• CH₄, CH₃Cl, CH₂Cl₂

• HCOOH, CH₃COOH, C₂H₅COOH

• C₂H₂, C₂H₄, C₂H₆

• HCOOH, HCHO, CH₃OH

Which could form an addition polymer?

• H₂NCH₂CHCHCH₂NH₂

• H₂N(CH₂)₆CO₂H

• HO(CH₂)₂CO₂H

• H₂N(CH₂)₆NH₂

A compound decolorizes bromine water in the dark. Which statement is correct?

• It contains C=C and is an alkene.

• It contains C–C and is an alkene.

• It contains C=C and is an alkane.

• It contains C–C and is an alkane.

Applying IUPAC rules, what is the name of the compound?

• 1-ethyl-1,3-dimethylbut-2-ene

• 2-ethyl-4-methylpent-3-ene

• 2-methyl-4-ethylpent-3-ene

• 2,4-dimethylhex-2-ene

Which statements about the chlorine free radical are correct?

I. It has 18 electrons.

II. It is an uncharged species.

III. It is formed by homolytic fission.

• I and II only

• I and III only

• II and III only

• I, II and III

Which statement is correct about the polymerization of ethene to poly(ethene)?

• The polymer is an alkene.

• The monomer ethene and the repeating unit have the same empirical formula.

• The monomer ethene is less reactive than the polymer.

• The polymer contains C−C single and C=C double bonds.