Polyethylene phthalate is a copolymer containing phthalic acid and ethylene glycol. The monomers will undergo condensation using a step-growth process to form the polymer. Modify the molecules shown to clearly indicate the product formed from reaction of one functional group on phthalic acid with one functional group on ethylene glycol. Select → C Draw H 0 Rings O More HC 0 CH H Erase Q2 Q

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Polyethylene phthalate is a copolymer containing phthalic acid and ethylene glycol. The monomers will undergo condensation using a step-growth process to form the polymer.

**Molecular Modification Task:**
You are tasked with modifying the given molecular structures to clearly indicate the product formed from the reaction of one functional group on phthalic acid with one functional group on ethylene glycol.

**Tools Provided:**
- Select
- Draw
- Rings
- More
- Erase

**Available Elements:**
- C (Carbon)
- H (Hydrogen)
- O (Oxygen)

**Molecules Displayed:**
1. **Ethylene Glycol Structure:**
   - Linear structure with two hydroxyl (OH) groups and two carbon atoms. Formula: HO-CH₂-CH₂-OH.

2. **Phthalic Acid Structure:**
   - Benzene ring with two carboxylic acid (COOH) groups. Formula: C₆H₄(COOH)₂.

Use the drawing and selection tools to combine these structures, indicating the ester formation typically expected in the production of polyethylene phthalate. The esterification reaction involves forming an ester bond (C-O-C) between the carboxyl group of phthalic acid and the hydroxyl group of ethylene glycol, releasing water (H₂O) as a byproduct.
Transcribed Image Text:Polyethylene phthalate is a copolymer containing phthalic acid and ethylene glycol. The monomers will undergo condensation using a step-growth process to form the polymer. **Molecular Modification Task:** You are tasked with modifying the given molecular structures to clearly indicate the product formed from the reaction of one functional group on phthalic acid with one functional group on ethylene glycol. **Tools Provided:** - Select - Draw - Rings - More - Erase **Available Elements:** - C (Carbon) - H (Hydrogen) - O (Oxygen) **Molecules Displayed:** 1. **Ethylene Glycol Structure:** - Linear structure with two hydroxyl (OH) groups and two carbon atoms. Formula: HO-CH₂-CH₂-OH. 2. **Phthalic Acid Structure:** - Benzene ring with two carboxylic acid (COOH) groups. Formula: C₆H₄(COOH)₂. Use the drawing and selection tools to combine these structures, indicating the ester formation typically expected in the production of polyethylene phthalate. The esterification reaction involves forming an ester bond (C-O-C) between the carboxyl group of phthalic acid and the hydroxyl group of ethylene glycol, releasing water (H₂O) as a byproduct.
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