Amongst the following isomeric alcohols, which one has the highest boiling point.
Correct answer: B. 1 - Butanol
- A. 2 - Butanol
- B. 1 - Butanol
- C. 2 - Methyle → 2 - Proponal
- D. All of these have the same boiling point
Explanation
Among the isomeric alcohols you mentioned, 1-butanol has the highest boiling point because it has a longer carbon chain, which allows for stronger intermolecular forces like hydrogen bonding. These stronger forces require more energy to break, resulting in a higher boiling point. On the other hand, 2-butanol and 2-methylpropane have shorter carbon chains and do not exhibit hydrogen bonding to the same extent, leading to lower boiling points. So, it's the carbon chain length and the presence of hydrogen bonding that determine the boiling points of these alcohols.
Last updated
About Alcohols
Alcohols contain a hydroxyl group attached to a saturated carbon atom and are classified as primary, secondary or tertiary. Their nomenclature, hydrogen bonding, acidity, oxidation, dehydration, reaction with sodium and conversion to haloalkanes are covered, along with the distinction between alcohols and phenols, where the hydroxyl group is attached directly to an aromatic ring.
Practise Alcohols and Phenols
535 free Alcohols and Phenols MCQs from Chemistry, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Exams that ask Chemistry questions like this
Chemistry is on 12 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
Related questions
3 Moles of ethanol reacts with 1 mole of PBr3 to form 3 moles of bromoethane and 1 mole of X. Which of the following is X?
95% ethanol is called_________________?
A biochemical process in which large molecules are broken down into smaller molecules in the presence of enzymes secreted by microorganism is called?
A tertiary alcohol is not readily oxidised because the carbon carrying the hydroxyl group
Absolute alcohol is obtained when rectified spirit is treated with__________________?