NEET > Chemistry Class 11 > Introduction to Alkenes & Alkynes
Introduction to Alkenes & Alkynes Video Lecture - Chemistry Class 11 - NEET
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FAQs on Introduction to Alkenes & Alkynes Video Lecture - Chemistry Class 11 - NEET
| 1. What are alkenes and alkynes? |  |
Ans. Alkenes and alkynes are hydrocarbons that belong to the family of organic compounds. Alkenes are unsaturated hydrocarbons that contain at least one carbon-carbon double bond, while alkynes are unsaturated hydrocarbons that contain at least one carbon-carbon triple bond.
| 2. How do alkenes and alkynes differ from alkanes? | |
Ans. Alkenes and alkynes differ from alkanes in terms of their chemical structure. Alkenes have double bonds between carbon atoms, while alkynes have triple bonds. Alkanes, on the other hand, only have single bonds between carbon atoms. This difference in bonding results in distinct physical and chemical properties among these hydrocarbon groups.
| 3. What are some common uses of alkenes and alkynes? | |
Ans. Alkenes and alkynes have various applications in different industries. Alkenes, such as ethene, are used as starting materials for the production of plastics, synthetic fibers, and solvents. Alkynes, like ethyne, are utilized in welding torches, as fuel gases, and in the synthesis of organic compounds, including pharmaceuticals.
| 4. How do alkenes and alkynes undergo addition reactions? | |
Ans. Alkenes and alkynes readily undergo addition reactions due to the presence of their double or triple bonds. In an addition reaction, atoms or groups of atoms are added to the carbon-carbon double or triple bond, resulting in the formation of new single bonds. This process allows the formation of various organic compounds, such as alcohols, halogenated compounds, and aldehydes or ketones.
| 5. Can alkenes and alkynes be converted into alkanes? | |
Ans. Yes, alkenes and alkynes can be converted into alkanes through a process called hydrogenation. Hydrogenation involves the addition of hydrogen gas (H2) to the carbon-carbon double or triple bond. This reaction is commonly catalyzed by metal catalysts, such as platinum or palladium. The result is the saturation of the double or triple bond, leading to the formation of alkanes. This reaction is widely used in industries for the production of saturated hydrocarbons.
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195 videos|333 docs|190 tests
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Timeline
| 01:14 | Alkenes & Alkynes |
| 01:39 | Naming Rules |
| 03:29 | Cis-Trans Isomerism |
| 04:40 | Hydrogenation, Halogenation, Polymerization, & Triglycerides |
| 05:50 | Meanings of Fat Names |
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