Organic Chemistry 2026 | Comprehensive
Study Guide, Practice Questions, Answers
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Guide
Updated 2026 Questions and Answers
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Rationales
Included
,Alkanes - First four alkanes are methane (CH4), Ethane (C2H6), Propane (C3H8), and
Butane (C4H10)
- single Bonded
Alkenes and Alkynes - Contain double and triple bonds respectively.
Alcohols - contain Hydroxyl group (OH)
- suffix ol or hydroxy if a higher priority group is present
- Diols contain two hydroxyl groups.
* Geminal: 2 Hydroxyl groups on the same carbon
* Vicinal: on adjacent carbons
Carbonyl group
Common Names of Aldehydes - suffix al
- Common names include
* formaldehyde for methanal (R = H)
* Acetyldehyde for ethanal ( R = CH3)
* Propionaldehyde for propanal (R = CH3CH2)
Aldehyde vs. Ketones Terminal group - An aldehyde has a terminal functional group due to the one hydrogen
- Ketone has two alkyl groups so it's never a terminal group.
Naming cyclic Aldehydes
Aldehyde Nomenclature: Methanal Formaldehyde
, Aldehyde Nomenclature: Ethanal Acetaldehyde
Aldehyde Nomenclature: Propanal Propionaldehyde
Aldehyde Nomenclature: Butanal Butyraldehyde
Aldehyde Nomenclature: Pentanal Valeraldehyde
Naming Ketones: 2-propanone - Dimethyl ketone
- Acetone
Naming Ketones: 2-butanone - ethylmethylketone
Naming Ketones: 3-oxobutanoic Acid
Naming Ketones: Cyclopentanone
Study Guide, Practice Questions, Answers
& Complete Exam Review |
Complete Ethics Study
Guide
Updated 2026 Questions and Answers
100% Verified Exam Prep and Comprehensive
Rationales
Included
,Alkanes - First four alkanes are methane (CH4), Ethane (C2H6), Propane (C3H8), and
Butane (C4H10)
- single Bonded
Alkenes and Alkynes - Contain double and triple bonds respectively.
Alcohols - contain Hydroxyl group (OH)
- suffix ol or hydroxy if a higher priority group is present
- Diols contain two hydroxyl groups.
* Geminal: 2 Hydroxyl groups on the same carbon
* Vicinal: on adjacent carbons
Carbonyl group
Common Names of Aldehydes - suffix al
- Common names include
* formaldehyde for methanal (R = H)
* Acetyldehyde for ethanal ( R = CH3)
* Propionaldehyde for propanal (R = CH3CH2)
Aldehyde vs. Ketones Terminal group - An aldehyde has a terminal functional group due to the one hydrogen
- Ketone has two alkyl groups so it's never a terminal group.
Naming cyclic Aldehydes
Aldehyde Nomenclature: Methanal Formaldehyde
, Aldehyde Nomenclature: Ethanal Acetaldehyde
Aldehyde Nomenclature: Propanal Propionaldehyde
Aldehyde Nomenclature: Butanal Butyraldehyde
Aldehyde Nomenclature: Pentanal Valeraldehyde
Naming Ketones: 2-propanone - Dimethyl ketone
- Acetone
Naming Ketones: 2-butanone - ethylmethylketone
Naming Ketones: 3-oxobutanoic Acid
Naming Ketones: Cyclopentanone
