Comparing substances of similar molecular mass, which of the following has the lowest boiling point due to the absence of hydrogen bonding?
Q1. Comparing substances of similar molecular mass, which of the following has the lowest boiling point due to the absence of hydrogen bonding?
Answer: Propanal
Explanation: Aldehydes have lower boiling points than alcohols because they cannot form intermolecular hydrogen bonds. Alkanes have even lower boiling points due to London forces.