Question

compare the boiling points of each pair. select the single best answer for each part. part 1 of 3 which compound has the lower boiling point? (ch3)3ccoch3 (ch3)3cch2ch2oh part 2 of 3 which compound has the higher boiling point? (ch3)3cch2ch2ch3 (ch3)3cch2cho part 3 of 3 which compound has the higher boiling point? (ch3)3cch2oh (ch3)2chcoch3

Explanation:

Step1: Analyze intermolecular forces

Inter - molecular forces affect boiling points. Hydrogen bonding is stronger than dipole - dipole and London dispersion forces.

Step2: Evaluate Part 1

$(CH_3)_3CCOCH_3$ is a ketone and has dipole - dipole forces. $(CH_3)_3CCH_2CH_2OH$ is an alcohol and has hydrogen bonding. Hydrogen bonding is stronger, so $(CH_3)_3CCOCH_3$ has a lower boiling point.

Step3: Evaluate Part 2

$(CH_3)_3CCH_2CH_2CH_3$ is a hydrocarbon with only London dispersion forces. $(CH_3)_3CCH_2CHO$ is an aldehyde with dipole - dipole forces. Dipole - dipole forces are stronger than London dispersion forces, so $(CH_3)_3CCH_2CHO$ has a higher boiling point.

Step4: Evaluate Part 3

$(CH_3)_3CCH_2OH$ is an alcohol with hydrogen bonding. $(CH_3)_2CHCOCH_3$ is a ketone with dipole - dipole forces. Hydrogen bonding is stronger, so $(CH_3)_3CCH_2OH$ has a higher boiling point.

Answer:

Part 1: $(CH_3)_3CCOCH_3$
Part 2: $(CH_3)_3CCH_2CHO$
Part 3: $(CH_3)_3CCH_2OH$