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TET 323University of IbadanOct 1, 2026

Hydrocarbons: Saturated Alkanes, Unsaturated Alkenes/Alkynes, Aromatic Systems & Environmental Impact

Structure

12 Concept Stages

Practice Exam

126+ Questions

Active Recall

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Executive Topic Summary

Master the complete hydrocarbon curriculum: alkane structure and conformations, homologous series, alkene/alkyne preparation and reactions (addition, ozonolysis, Markovnikov's rule), conjugated systems, aromatic chemistry, trans fatty acids, and the environmental chemistry of CFCs, HFAs, and HFOs as propellants.

High-Yield Exam Takeaways

  • Hydrocarbon Classification & Alkane Fundamentals
  • Combustion, Fossil Fuels & The Greenhouse Gas Crisis
  • Cycloalkanes: Ring Structures & Conformational Strain
  • Chlorofluorocarbons (CFCs), HFAs & HFOs: Propellants & Ozone Depletion
  • Alkenes: Structure, Preparation & Unsaturation
  • Alkene Reactions: Addition Mechanisms & Markovnikov's Rule
  • Alkene Oxidation: Hydroxyls, Epoxides & Ozonolysis
  • Alkynes: Structure, Reduction & Selective Hydrogenation
  • Wittig Reaction: Converting Carbonyls to Alkenes
  • Trans Fatty Acids: Production, Health Risks & Dietary Impact
  • Aromatic Hydrocarbons: Benzene, Resonance & Exceptional Stability
  • Integration & Exam Mastery: Connecting All Hydrocarbon Concepts

Study Tree Preview (Bite-Sized Concepts)

Previewing 3 stages

1Hydrocarbon Classification & Alkane Fundamentals

6 Micro-Bites
The Hydrocarbon Family Tree: Saturated vs. Unsaturated:All hydrocarbons—compounds made purely of carbon and hydrogen—split into two major branches. <term def="hydrocarbons containing only single C-C and C-H bonds with the maximum numbe...
Alkane Geometry: Tetrahedral Carbon & sp³ Hybridization:In alkanes, every carbon atom uses <term def="the blending of atomic orbitals (s and p) to create hybrid orbitals suited for bonding">sp³ hybridization</term>. This means each carb...

2Combustion, Fossil Fuels & The Greenhouse Gas Crisis

4 Micro-Bites
Combustion: Complete Oxidation of Hydrocarbons:When you burn a hydrocarbon—whether it is gasoline in a car engine, natural gas in your stove, or coal in a power plant—you are performing <term def="a rapid exothermic reaction wh...
The Greenhouse Effect: How CO₂ Traps Heat:Sunlight streams through Earth's atmosphere and warms the planet's surface. Normally, that heat radiates back upward as infrared radiation. But CO₂ molecules in the atmosphere abso...

3Cycloalkanes: Ring Structures & Conformational Strain

4 Micro-Bites
Cyclopropane: Extreme Ring Strain & Instability:When three carbons link in a ring, they form a triangle. But remember: sp³ carbons want to sit at 109.5° angles, not 60° angles. Forcing three carbons into a triangle creates enorm...
Cyclobutane: Moderate Ring Strain & Puckering:Cyclobutane, with four carbons in a ring, faces less severe strain than cyclopropane. The C-C-C bond angles are compressed to 90°, still well below the ideal 109.5°, but not as ext...

Sample Practice Questions (Active Recall)

Showing 3 of 126+

Q1.Which of the following best defines a saturated hydrocarbon?

AA hydrocarbon containing only single C-C and C-H bonds with the maximum number of hydrogen atoms.
BA hydrocarbon fragment with one free valence, used as a substituent.
CA hydrocarbon arranged in a ring structure with delocalized π electrons.
DA hydrocarbon containing one or more C=C or C≡C bonds.

Q2.In alkanes, the bond angle between any two C-H or C-C bonds is approximately 120° due to sp² hybridization.

ATrue
BFalse

Q3.The general formula for a straight-chain alkane is _______.

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