Table of contents

1. Matter and Measurements4h 31m
2. Atoms and the Periodic Table5h 23m
3. Ionic Compounds2h 18m
4. Molecular Compounds2h 18m
5. Classification & Balancing of Chemical Reactions3h 17m
6. Chemical Reactions & Quantities2h 27m
7. Energy, Rate and Equilibrium3h 46m
8. Gases, Liquids and Solids3h 25m
9. Solutions4h 10m
10. Acids and Bases3h 29m
11. Nuclear Chemistry56m
BONUS: Lab Techniques and Procedures1h 38m
BONUS: Mathematical Operations and Functions47m
12. Introduction to Organic Chemistry1h 34m
13. Alkenes, Alkynes, and Aromatic Compounds2h 12m
14. Compounds with Oxygen or Sulfur1h 6m
15. Aldehydes and Ketones1h 1m
16. Carboxylic Acids and Their Derivatives1h 11m
17. Amines39m
18. Amino Acids and Proteins1h 51m
19. Enzymes1h 37m
20. Carbohydrates1h 41m
21. The Generation of Biochemical Energy2h 8m
22. Carbohydrate Metabolism2h 22m
23. Lipids2h 26m
24. Lipid Metabolism1h 45m
25. Protein and Amino Acid Metabolism1h 37m
26. Nucleic Acids and Protein Synthesis2h 54m

13. Alkenes, Alkynes, and Aromatic Compounds

Naming Alkenes

GOB Chemistry

13. Alkenes, Alkynes, and Aromatic Compounds

Naming Alkenes

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Problem 32a

Textbook Question

Draw the condensed structural formula for each of the following:
a. cis-1,2-difluoroethene

Verified step by step guidance

Understand the structure of ethene (C₂H₄), which is a simple alkene with a double bond between the two carbon atoms.

Recognize that 'cis' indicates that the two substituents (in this case, fluorine atoms) are on the same side of the double bond. This is important for determining the spatial arrangement of the molecule.

Replace two hydrogen atoms on the ethene molecule with fluorine atoms, ensuring that both fluorine atoms are on the same side of the double bond to satisfy the 'cis' configuration.

Write the condensed structural formula, which represents the connectivity of atoms in the molecule without showing the spatial arrangement explicitly. For cis-1,2-difluoroethene, the formula will include the fluorine atoms bonded to the first and second carbon atoms.

Double-check the formula to ensure it accurately represents the cis configuration and includes all atoms (carbon, hydrogen, and fluorine) in the correct positions.

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Key Concepts

Here are the essential concepts you must grasp in order to answer the question correctly.

Condensed Structural Formula

A condensed structural formula is a way of representing a chemical compound that shows the arrangement of atoms and the connectivity between them without depicting all the bonds explicitly. It typically uses symbols for atoms and groups them together to indicate how they are connected, making it easier to visualize the structure of small organic molecules.

Cis-Trans Isomerism

Cis-trans isomerism is a form of stereoisomerism where molecules with the same molecular formula have different spatial arrangements of atoms. In cis isomers, similar groups are on the same side of a double bond or ring structure, while in trans isomers, they are on opposite sides. This difference can significantly affect the physical and chemical properties of the compounds.

Fluoroalkenes

Fluoroalkenes are alkenes that contain fluorine atoms in their structure. The presence of fluorine can influence the reactivity and stability of the compound due to its electronegativity and ability to form strong bonds. In the case of cis-1,2-difluoroethene, two fluorine atoms are attached to the first and second carbon atoms of the ethene backbone, affecting its geometric configuration.

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