Asksia AI LOGO


青州's Question
Posted 3 months ago

Arrange the following compounds in order of increasing boiling point.
Clear All
Sign in to unlock the answer
Answer from Sia
Posted 3 months ago
Identify molecular structures: The boiling points of organic compounds are influenced by molecular weight, branching, and the types of intermolecular forces present. Alcohols generally have higher boiling points than ketones and alkanes due to hydrogen bonding. Ketones have dipole-dipole interactions and alkanes have only London dispersion forces
Analyze intermolecular forces: The primary alcohol (CH3CH2CH2CH2OH) can form hydrogen bonds, which are the strongest intermolecular forces among the given compounds. The ketone (CH3CH2CH2C=OCH3) has a polar carbonyl group that allows for dipole-dipole interactions, which are weaker than hydrogen bonds but stronger than London dispersion forces. The alkane (CH3CH2CH2CH2CH3) has the weakest intermolecular forces, which are London dispersion forces
Consider molecular weight and branching: All three compounds have similar molecular weights, but the alkane has the longest carbon chain without any branching, which typically leads to stronger London dispersion forces compared to branched isomers. However, this effect is not strong enough to overcome the difference in intermolecular forces between the alkane and the other two compounds
Arrange by boiling point: Based on the types of intermolecular forces, the order of increasing boiling point is alkane < ketone < alcohol
Key Concept
Intermolecular forces and boiling points
The boiling point of organic compounds increases with stronger intermolecular forces: London dispersion < dipole-dipole < hydrogen bonding.

Not the question you are looking for? Ask here!

Enter question by text

Enter question by image

Upgrade to Asksia Pro

Join a AskSia's Pro Plan, and get 24/7 AI tutoring for your reviews, assignments, quizzes and exam preps.

Unlimited chat query usages
Strong algorithms that better know you
Early access to new release features
Study Other Question