Organic Chemistry Grade 12 Physical Properties & Reactions

Which functional groups are involved in the formation of esters?

 

• Formyl and carbonyl

• Hydroxyl and carbonyl

• Hydroxyl and carboxyl

• Carbonyl and carboxyl

The boiling point of a compound is the …

• minimum temperature at which it boils.

• average temperature at which it boils across all possible atmospheric

  pressures.

• maximum temperature at which it boils.

• temperature at which its vapour pressure equals atmospheric pressure.

Which ONE of the following organic reactions will take place only when

exposed to light?

• CH₃CH₃ + Cℓ₂ → CH₃CH₂Cℓ + HCℓ

• CH₂CH₂ + Cℓ₂ → CH₂CℓCH₂Cℓ

• CH₃CH₃ → CH₂CH₂ + H₂

• CH₂CH₂ + H₂ → CH₃CH₃

The reaction represented by the equation below takes place in the presence

of a catalyst.

C₁₃H₂₈(ℓ) → C₂H₄(g) + C₃H₆(g) + C₈H₁₈(ℓ)

This reaction is an example of …

• addition.

• substitution.

• cracking.

• combustion

Which ONE of the following isomers has the LOWEST boiling point?

• CH₃CH₂CH₂CH₂CH₂CH₃

• CH₃CH₂C(CH₃)₂CH₃

• CH₃CH(CH₃)CH₂CH₂CH₃

• CH₃CH₂CH(CH₃)CH₂CH₃

The addition of hydrogen to an alkene is known as ...

• hydration.

• cracking.

• hydrogenation.

• hydrohalogenation.

Which ONE of the following compounds has the highest vapour pressure?

• CH₃CH₃

• CH₃CH₂CH₃

• CH₃CH₂CH₂CH₃

• CH₃CH₂CH₂CH₂CH₃

Which ONE of the following compounds has dipole-dipole forces between its

molecules?

• Ethane

• Ethene

• Ethyne

• Ethanal

Which ONE of the following is a product formed during the hydrolysis of

bromoethane?

• Water

• Ethene

• Ethanol

• Bromine

When 2-chlorobutane is strongly heated in the presence of concentrated

sodium hydroxide, the major product formed is …

• A but-1-ene.

• B but-2-ene.

• C butan-1-ol.

• D butan-2-ol.