Problem 73 - A Complete Resource Book in Chemistry for JEE Main

Question

Which of the following statement is correct? (a) Vinyon is a copolymer of vinyl chloride and vinyl acetate (b) Saran is a copolymer or vinyl chloride and vinylidene chloride (c) butyl rubber in a copolymer of isobutylene and isoprene (d) all are correct

Step-by-Step Solution

Answer

All statements are correct; option (d) is the right choice.

Step 1: Identify Each Polymer

Read through each of the given options to identify and understand the components and definitions of the polymers mentioned in each statement. Compare these to your understanding or notes about common synthetic polymers.

Step 2: Analyze Option (a) - Vinyon

Vinyon is known to be a copolymer of vinyl chloride and vinyl acetate. Therefore, this statement is correct.

Step 3: Analyze Option (b) - Saran

Saran is a copolymer primarily made from vinylidene chloride with a small amount of vinyl chloride. Therefore, this statement is also correct.

Step 4: Analyze Option (c) - Butyl Rubber

Butyl rubber is a copolymer primarily composed of isobutylene with a small portion of isoprene to facilitate vulcanization. Therefore, this statement is correct as well.

Step 5: Conclusion

Since options (a), (b), and (c) are all correct based on known information about these polymers, the best choice is option (d), indicating that all statements are correct.

Key Concepts

Copolymers

Copolymers are fascinating materials created by combining two or more different types of monomers. By evolving their structure this way, scientists can tailor their properties to suit specific needs. Unlike a regular polymer, which consists of repeating units of a single type of monomer, copolymers can offer enhanced strength, flexibility, or other specialized characteristics. One common example is Vinyon, formed from vinyl chloride and vinyl acetate. This synthesis allows for the merging of the beneficial traits of each monomer into a single polymer.

• Copolymers can be tailored to specific applications.
• They utilize varied monomers for enhanced properties.
• Examples include Vinyon and Butyl Rubber.

By understanding the components and their arrangements, scientists can harness these materials for applications ranging from clothing to industrial uses.

Chemical Structure

Understanding the chemical structure of polymers is crucial for predicting their behavior and properties. The arrangement of atoms within the polymer and the types of bonds present influence everything from flexibility to temperature resistance. In synthetic polymers, and especially copolymers, these structural details are even more complex due to the varied monomers involved. For instance, the structure of Saran involves a combination of vinylidene chloride and vinyl chloride, which results in its notable durability and chemical resistance.

• Chemical structure determines polymer properties.
• Saran's structure accounts for its unique characteristics.

Grasping these principles helps in the purposeful design of materials for specific applications like packaging, piping, or even space suits.

Synthetic Polymers

Synthetic polymers are man-made materials created through chemical processes. Unlike natural polymers like DNA or proteins, these are engineered for specific tasks. The flexibility in their design and composition allows for a wide range of applications, from everyday items to specialized industrial applications. Synthetic versions like butyl rubber, which is made from isobutylene and a small amount of isoprene, highlight the versatility of these materials. Butyl rubber is notably used for making airtight and flexible products due to its unique chemical structure.

• Synthetic polymers offer a wide range of applications.
• They're designed for durability, flexibility, and resistance.
• Examples include butyl rubber and Saran.

By understanding synthetic polymers, industries can innovate and create products that meet specific needs and enhance daily life.