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The monor unit of the following polymer ...

The monor unit of the following polymer
`{NH-CO-NH-CH_(2)}_(n)`

A

Glycine and formadehyde

B

Urea and ethanol

C

Urea and formaldenyde

D

Glycine and adipic acid

Text Solution

AI Generated Solution

The correct Answer is:
To determine the monomer unit of the polymer represented by the formula `{NH-CO-NH-CH_(2)}_(n)`, we can break down the structure step by step. ### Step-by-Step Solution: 1. **Identify the Structure**: The given polymer is represented as `{NH-CO-NH-CH_(2)}_(n)`. This indicates that the repeating unit consists of specific functional groups. 2. **Recognize the Components**: The repeating unit can be analyzed as follows: - `NH` represents an amine group (specifically, a primary amine). - `CO` represents a carbonyl group (part of an amide linkage). - `NH` again indicates another amine group. - `CH2` represents a methylene group. 3. **Construct the Monomer**: By combining these components, we can deduce that the monomeric unit must contain: - An amine group (NH2) - A carbonyl group (C=O) - A methylene group (CH2) Therefore, the monomeric unit can be constructed as: - Urea (NH2-CO-NH2) can be combined with formaldehyde (CH2O) to form the repeating unit. 4. **Final Monomer Structure**: The monomeric unit can be represented as: - `NH2-CO-NH-CH2` This indicates that the polymer is formed by the condensation of urea and formaldehyde, where the urea provides the amine and carbonyl groups, and the formaldehyde provides the methylene link. 5. **Conclusion**: Thus, the monomeric unit of the polymer `{NH-CO-NH-CH_(2)}_(n)` is: - **Monomer Unit**: `NH2-CO-NH-CH2`
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