Asked in FBISE Chemistry 2022 SLO — Paper 3 2022Moderate

Propose the types of Isomerism shown by 1-Butanol.

Correct answer: C. Chain isomerism, Position isomerism & Functional group isomerism

  • A. Chain isomerism & Position isomerism
  • B. Chain isomerism & Functional group isomerism
  • C. Chain isomerism, Position isomerism & Functional group isomerism
  • D. Position isomerism, Functional group isomerism & Metamerism

Explanation

1-Butanol (n-butanol or butyl alcohol) exhibits several types of isomerism:Chain Isomerism: As mentioned earlier, 1-butanol is a straight-chain alcohol. It consists of a linear chain of four carbon atoms. Other isomers with the same molecular formula (C4H10O) but different arrangements of the carbon skeleton, such as branched-chain isomers like 2-butanol and isobutanol, exhibit chain isomerism.Position Isomerism: 1-Butanol also shows position isomerism. In this case, the hydroxyl (-OH) group can be attached to any of the four carbon atoms in the carbon chain, resulting in different structural isomers. For example, 2-butanol and isobutanol are position isomers of 1-butanol because the hydroxyl group is attached to different carbon atoms in the chain.Functional Group Isomerism: Functional group isomerism involves compounds with the same molecular formula but different functional groups. For 1-butanol, this type of isomerism doesn't apply because it is an alcohol, and there are no other functional groups present in the molecule.

Last updated

About Isomerism

Isomerism occurs when compounds have the same molecular formula but different atom arrangements or spatial orientations. The content includes chain, position, functional, metameric and tautomeric isomerism, along with geometrical and optical isomerism, including cis-trans forms, E/Z notation, chirality and enantiomers.

Practise Fundamental Principles of Organic Chemistry

536 free Fundamental Principles of Organic Chemistry 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