5. Draw the following molecules in two difference co bond. Name the molecules and be sure to include th (trans or cis). If the structure cannot be drawn in tw

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Chapter1: Chemical Foundations
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**Question 5:**

*Draw the following molecules in two different configurations about the double bond. Name the molecules and be sure to include the appropriate configuration (trans or cis). If the structure cannot be drawn in two different configurations, explain why.*

**a.** H2C=CH2

**b.** CH3CH=CHCH3

**c.** Cl(CH3)C=CHCH3

**Task Explanation:**

For part (a), the structure H2C=CH2 (ethylene) cannot have cis or trans configurations because each carbon atom in the double bond is connected to identical hydrogen atoms.

For part (b), CH3CH=CHCH3 is but-2-ene. This can have both configurations:
- **Cis-2-butene:** Both CH3 groups are on the same side of the double bond.
- **Trans-2-butene:** The CH3 groups are on opposite sides of the double bond.

For part (c), Cl(CH3)C=CHCH3 can be designed as 3-chloro-2-methyl-2-butene, displaying:
- **Cis configuration:** The Cl and CH3 groups adjacent to the double bond are on the same side.
- **Trans configuration:** The Cl and CH3 groups are on opposite sides.

The question requires understanding molecular geometry and how substituents around a double bond affect molecular configuration.
Transcribed Image Text:**Question 5:** *Draw the following molecules in two different configurations about the double bond. Name the molecules and be sure to include the appropriate configuration (trans or cis). If the structure cannot be drawn in two different configurations, explain why.* **a.** H2C=CH2 **b.** CH3CH=CHCH3 **c.** Cl(CH3)C=CHCH3 **Task Explanation:** For part (a), the structure H2C=CH2 (ethylene) cannot have cis or trans configurations because each carbon atom in the double bond is connected to identical hydrogen atoms. For part (b), CH3CH=CHCH3 is but-2-ene. This can have both configurations: - **Cis-2-butene:** Both CH3 groups are on the same side of the double bond. - **Trans-2-butene:** The CH3 groups are on opposite sides of the double bond. For part (c), Cl(CH3)C=CHCH3 can be designed as 3-chloro-2-methyl-2-butene, displaying: - **Cis configuration:** The Cl and CH3 groups adjacent to the double bond are on the same side. - **Trans configuration:** The Cl and CH3 groups are on opposite sides. The question requires understanding molecular geometry and how substituents around a double bond affect molecular configuration.
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