How Basic is Your Molecule? The Role of Inductive Effect

The video tutorial explains the basic properties of amines, which are derived from ammonia by replacing hydrogen atoms with alkyl or aryl groups. The basicity of amines is influenced by electronic and stearic factors. While tertiary amines are theoretically more basic due to electronic factors, secondary amines are practically more basic because stearic factors hinder proton attack in tertiary amines. The video compares the basicity of primary, secondary, and tertiary amines, highlighting the dominance of electronic factors in secondary amines.

What is the parent compound of amines?

• Methane

• Ammonia

• Ethane

• Benzene

How are amines derived from ammonia?

• By adding oxygen atoms

• By replacing hydrogen atoms with alkyl or aryl groups

• By removing nitrogen atoms

• By adding water molecules

Which factor theoretically makes tertiary amines more basic?

• Presence of electron-withdrawing groups

• Presence of electron-donating groups

• Absence of lone pairs

• Presence of hydrogen bonds

Why are secondary amines more basic than tertiary amines in practice?

• Due to less steric hindrance

• Due to more hydrogen bonds

• Due to lower molecular weight

• Due to higher electron density

What effect does steric hindrance have on the basicity of tertiary amines?

• Makes them acidic

• Has no effect

• Decreases basicity

• Increases basicity