Terylene is a polymer of ethylene glycol and

Options

A. phthalic acid
B. terephthalic acid
C. adipic acid
D. 1,6-hexadiamine

Answer

To determine the polymerization process that leads to the formation of Terylene, we need to identify the monomers involved and the reaction that occurs between them.

### Step-by-Step Solution:

1. **Identify the Monomers**:
Terylene is formed from two monomers: ethylene glycol and terephthalic acid.
- Ethylene glycol has the formula: \( \text{HO-CH}_2-\text{CH}_2-\text{OH} \)
- Terephthalic acid has the formula: \( \text{C}_6\text{H}_4(\text{COOH})_2 \) (which can be represented as \( \text{C}_6\text{H}_4(\text{C}(=O)\text{OH})_2 \))

2. **Understand the Functional Groups**:
- Ethylene glycol contains two hydroxyl (-OH) groups.
- Terephthalic acid contains two carboxylic acid (-COOH) groups.

3. **Polymerization Reaction**:
The polymerization occurs through a condensation reaction where the -OH group from ethylene glycol reacts with the -COOH group from terephthalic acid.
- During this reaction, water (H2O) is eliminated.
- The reaction can be summarized as:
\[ \text{HO-CH}_2-\text{CH}_2-\text{OH} + \text{C}_6\text{H}_4(\text{COOH})_2 \rightarrow \text{Terylene} + \text{H}_2\text{O} \]

4. **Formation of the Polymer**:
As the reaction continues, multiple units of ethylene glycol and terephthalic acid link together, forming long chains of Terylene. The structure of Terylene consists of repeating units derived from these monomers.

5. **Final Structure**:
The final structure of Terylene includes the benzene ring from terephthalic acid and the ether linkages from the ethylene glycol, resulting in a polyester.

### Summary:
Terylene is a polymer formed from the condensation polymerization of ethylene glycol and terephthalic acid, resulting in the elimination of water and the formation of long-chain polyester molecules.

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