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Chapter 4: Q.60. (page 128)

Question: Classify each pair of compounds as constitutional isomers or identical molecules.

a.

b.

Short Answer

Expert verified

Answer

  1. The given compounds are identical.
  2. The given compounds are constitutional isomers.

Step by step solution

01

Constitutional isomers

Constitutional isomers have the same number of atoms of each element but differ in the connectivities of those atoms.

For example, 1-butene and 2-butene have the same molecular formula C4H8but are completely different in terms of the bonding of atoms.

Constitutional isomers

02

Identical molecules

Identical molecules have the same molecular formula, sequence, connectivities, and arrangement of atoms in space.

03

Re-draw the structures

Re-draw the given structures along with the bonds from the given Newman structures. Check for isomerism.

04

Isomerism in the given compounds

a. Re-drawing the structure from the given Newman projections, you get:


Re-drawn structures

Since the IUPAC names of the two structures are the same, the two compounds are identical.

b. Re-drawing the skeletal structure from the given Newman projections, you get:

Re-drawn structures

Since the given compounds are different in bonding, the compounds are constitutional isomers.

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Most popular questions from this chapter

Question: Give the IUPAC name for each compound.


j

Question: Three components of the sex pheromone of the female sand bee (Ophrys sphegodes) are saturated hydrocarbons containing 23, 25, and 27 carbon atoms. How many H atoms does each of these alkanes contain? Interestingly, the early spider orchid emits a similar hydrocarbon mixture to attract male sand bees to pollinate its flowers.

Question: Hydrocarbons like benzene are metabolized in the body to arene oxides, which rearrange to form phenols. This is an example of a general process in the body, in which an unwanted compound (benzene) is converted to a more water-soluble derivative called a metabolite, so that it can be excreted more readily from the body.

a. Classify each of these reactions as oxidation, reduction, or neither.

b. Explain why phenol is more water soluble than benzene. This means that phenol dissolves in urine, which is largely water, to a greater extent than benzene.

Question: Give the IUPAC name for each of the five constitutional isomers of molecular formula C6H14 in Problem 4.3.

Question: Classify each reaction as oxidation, reduction, or neither.

a.

b.
See all solutions

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