How to Find and Draw Isomers
This is an extension of the isomers topic in the HSC Chemistry course under the topic of Hydrocarbons.
HSC Chemistry Syllabus
- explore and distinguish the different types of structural isomers, including saturated and unsaturated hydrocarbons, including: (ACSCH035)
How to Find and Draw Isomers
Isomers have identical molecular formulae but varied structures. They are often challenging for students to identify and illustrate in organic chemistry.
Isomers (Revision)
Isomers are distinct compounds that share the same molecular formula but differ in the spatial arrangement or connectivity of their atoms. This unique characteristic allows isomers to exhibit varied chemical and physical properties despite being the same set of elements in identical proportions.
Read more about isomers here
Example questions (answered in video) :
1. Which of the following are chain isomers:
A. Butane and but-1-ene
B. But-1-ene and but-2-ene
C. Pentane and 2-methylbutane
D. Pent-2-ene and but-2-ene
2. Which of the following are position isomers:
A. 1-chloropropane and 2-chloropropane
B. Propene and 2-methylpropane
C. But-1-ene and but-1-yne
D. But-2-ene and 2-methylpropene
3. Describe the relationship between the compounds shown below
4. Describe the relationship between the compounds shown below
5. Describe the relationship between the compounds shown below
6. Draw all isomers which share the molecular formula `C_5H_{12}`.
7. Draw all isomers which share the molecular formula `C_4H_8`.
8. Draw all isomers which share the molecular formula `C_4H_{10}O`.
9. Draw all isomers which share the molecular formula `C_4H_8O`.
10. Draw five isomers which share the molecular formula `C_4H_8O_2`.